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9-3
-------
BAROMETRIC PRESSURE AT VARIOUS ALTITUDES
[Abridged from the Smithsonian Table*]
Values o( 00308 (14-0.0010195X36) log. 29-.80
o
Barometric
pressure, B
inches
17.00
.10
.20
.30
.40
17.50
.60
.70
.80
.90
iaoo
.10
.20
.30
.40
l&SO
.60
.70
.80
.90
19.00
.10
.20
.30
.40
19.50
.60
.70
.80
.90
moo
.10
.20
.30
.40
20.50
.60
.70
.80
.90
21.00
.10
.20
.30
.40
21.50
.CO
.70
.80
.90
22.00
.10
.20
.30
.40
22.50
.60
.70
.80
.90
23.00
.10
.20
.30
.40
0
Feet
15,347
15, 187
15,029
14,871
14, 715
14,559
14,404
14,250
14,097
13.945
13,793
13,643
13,493
13,344
13,196
13,049
12,902
12,756
12,611
12,467
12,324
12,181
12,039
11,898
11,758
11,618
11,479
11,340
11,208
11,066
10,930
10,794
10,659
10,525
10, 391
10,259
10,126
9,995
9,864
9,733
9,604
9,474
9,346
9,218
9,091
8,964
8,838
8,712
8,587
8,463
8,339
8,216
8,093
7,971
7,849
7,728
7,608
7,488
7,368
7,249
7,131
7,013
6,896
8,779
6,662
0.01
Feet
15,331
15,172
15,013
14,856
14,699
14,544
14,389
14,235
14,082
13,930
13, 778
13,628
13,478
13,329
13, 181
13,034
12,888
12,742
12,597
12,453
12,310
12,167
12,025
11,884
11,744
11,604
11,465
11,327
11,189
11,052
10,916
10,781
10,646
10, 512
10,378
10,245
10, 113
9,982
9,851
9,720
9,581
9,462
9,333
9,205
9,078
8,951
8,825
8,700
8,575
8,451
8,327
8,204
8,081
7,959
7,837
7,716
7,596
7,476
7,356
7,238
7,119
7,001
6,884
6,767
6,661
0.02
Feet
15,315
15,156
14,997
14,840
14,684
14,528
14,373
14, 219
14,067
13,914
13,763
13,613
13,463
13, 314
13,166
13,019
12,873
12,727
12,583
12,438
12,295
12,153
12,011
11,870
11,730
11,690
11, 451
11, 313
11, 178
11,039
10,903
10,767
10,632
10,498
10,365
10,232
10,100
9,968
9,838
9,707
9,678
9,449
9,320
9,193
9,065
8,939
8,813
8,687
8,562
8,438
8,314
8,191
8,069
7,947
7,825
7,704
7,584
7,464
7,345
7,226
7,107
6,990
6,872
6,755
6,639
0.03
Feet
15,299
15,140
14,982
14,824
14,668
14, 512
14,358
14,204
14,051
13,899
13, 748
13,598
13,448
13,300
13, 152
13,005
12,858
12,713
12,568
12,424
12,281
12,138
11,997
11,866
11,716
11, 576
11,437
11,299
11,162
11,025
10,889
10,754
10,619
10.485
10, 352
10,219
10,087
9,955
9,825
9,694
9,566
9,436
9,307
9,180
9,053
8,926
8,800
8,675
8,560
8,426
8,302
8,179
8,056
7,935
7,813
7,692
7,572
7,452
7,333
7,214
7,096
6,978
6,861
6,744
6,628
0.04
Feet
15,283
15,124
14,966
14,809
14,652
14,497
14,342
14,189
14,036
13,884
13,733
13,583
13,433
13,285
13, 137
12,990
12,844
12,698
12,554
12, 410
12,267
12,124
11,983
11,842
11,702
11,562
11,429
11,285
11,148
11,011
10, 875
10,740
10,605
10,472
10,338
10.206
10,074
9,942
9.812
9,681
9,662
9,423
9,296
9,167
9,040
8,913
8,788
8,662
8,538
8,413
8,290
8,167
8,044
7,922
7,801
7,680
7,560
7,440
7,321
7,202
7,084
6,966
6,849
6,732
6,616
0.05
Feet
15,267
15,108
14,950
14,793
14,637
14,481
14,327
14, 173
14,021
13,869
13, 718
13,568
13,418
13,270
13,122
12,975
12,829
12,684
12,539
12,395
12,252
12, 110
11,969
11,828
11,688
11,5*8
11,410
11,272
11,134
10,998
10,862
10,727
10,592
10,458
10,326
10,192
10,060
9,929
9,799
9,668
9,639
9,410
9,282
9,164
9,027
8,901
8,775
8,680
8,525
8,401
8,277
8,154
8,032
7,910
7,789
7,668
7,548
7,426
7,309
7,190
7,072
6,954
6,837
6,721
6,604
0.06
Feet
15,251
16,092
14,934
14, 777
14, 621
14,466
14,312
14,168
14,006
13,854
13,703
13,663
13,404
13,255
13, 107
12,961
12,815
12,669
12.525
12,381
12,238
12,096
11,964
11,814
11,674
11,634
11,396
11,258
11. 121
10,984
10,848
10, 713
10,579
10,445
10,312
10, 179
10,047
9,916
9,786
9,655
9,526
9,397
9,269
9,142
9,015
8,888
8,762
8,637
8,513
8,389
8,265
8,142
8,020
7,898
7,777
7,656
7,536
7,416
7,297
7,178
7,060
6,943
6,825
6,709
6,593
0.07
Feet
15,235
15,076
14,919
14,762
14,608
14,451
14,296
14,143
13,990
13,839
13,688
13,538
13,389
13,240
13,093
12,946
12,800
12,655
12,510
12,367
12,224
12,082
11,940
11,800
11,660
11,520
11,382
11,244
11,107
10,970
10,835
10,700
10,665
10,431
10,298
10,166
10,034
9,903
9,772
9,642
9,513
9,384
9,256
9,129
9,002
8,876
8,760
8,625
8,500
8,376
•S,253
8,130
8,008
7,886
7,765
7,644
7,524
7,404
7,285
7,166
7,048
(1,931
6,814
6,697
6,581
0.08
Feet
15,219
15,061
14,903
14, 746
14,590
14,435
14,281
14,128
13,975
13,824
13, 673
13,523
13, 374
13,226
13, 078
12,931
12,785
12,640
12,496
12,352
12,210
12,068
11,926
11,786
11,646
11,507
11,368
11,230
11,093
10,957
10,821
10,686
10,552
10,418
10,285
10,163
10,021
9,890
9,769
9,629
9,500
9,372
9,244
9,116
8,989
8,863
8,737
8,612
8,488
8,364
8,240
8.118
7,995
7,874
7,763
7,632
7,512
7,392
7,273
7,155
7,037
6,919
6,802
6,686
6,570
0.09
Feet
15,203
15,045
14,887
14,730
14, 575
14,420
14,266
14, 112
13,960
13,808
13,658
13,608
13,359
13,211
13,063
12,917
12,771
12,626
12,482
12,338
12,195
12,053
11,912
11, 772
11, 632
11,493
11,054
11, 217
11,080
10,943
10,808
10, 673
10,638
10,405
10,272
10, 139
10,008
9,877
9,746
9,617
9,487
9,359
9,231
9,103
8,977
8,860
8,725
8,600
8,475
8,352
8,228
8,105
7,983
7,862
7,740
7,620
7,600
7,380
7,261
7,143
7,025
6,907
6,790
6,674
6,658
9-4
See Reference No. 6
-------
BAROMETRIC PRESSURE AT VARIOUS ALTITUDES
(continued)
Barometric
pressure, U
inches
23.50
.60
.70
.80
.90
24.00
.10
.20
.30
.40
24.50
.60
.70
.80
.90
25.00
.10
.20
.30
.40
25.50
.60
.70
.80
90
26 00
.10
.20
.30
.40
26.50
.60
.70
.80
.90
27.00
.10
.20
.30
.40
27.50
.60
.70
.80
.90
28.00
.10
.20
.30
.40
28.50
.60
.70
80
.90
29.00
.10
.20
.30
.40
29.50
.60
.70
.80
.90
30.00
.10
.20
.30
.40
30.50
.60
70
80
0
Feet
6,546
6,431
6,316
6,202
6,088
5,974
5,861
5,749
5, 637
5,525
5,414
5,303
5,193
5,083
4,974
4,Sfi5
4,756
4,648
4,540
4,433
4,326
4,220
4,114
4,009
3,903
3,799
3,694
3,590
3,487
3,384
3,281
3,179
3,077
2,975
2,874
2,773
2,672
2,572
2,473
2,373
2,274
2,176
2,077
1,989
1,872
1,784
1,688
1, 591
1,495
1,399
1,303
1,208
1, 113
1,019
925
831
737
644
551
458
366
274
182
+91
0
-91
-181
-271
-361
-451
-540
-629
-718
-806
0.01
Feet
6,535
6,420
6,308
6,190
6,076
5,963
5,850
5, 737
5,625
5,514
5,403
5,292
5,182
5, 072
4,963
4,854
4,745
4.637
4, 530
4,423
4,316
4,209
4,104
3,998
3,893
3,788
3,684
3,580
3,477
3,373
3,270
3,168
3.066
2,965
2,864
2,763
2,662
2,562
2,463
2,363
2,264
2,166
2,067
1.970
1,872
1,775
1,678
1,581
1,485
1,389
1,294
1,199
1, 104
1,009
915
821
728
635
542
449
357
265
173
+ 82
-9
-100
-190
-280
-370
-460
-549
-638
-727
-815
0.02
Feet
6,523
6,408
6,293
6,179
6,065
5,952
5,839
5,726
5,614
5,503
5,392
5,281
5,171
5,061
4,952
4.843
4,735
4,627
4,519
4,412
4,305
4,199
4,093
3,988
3,882
3,778
3,674
3,570
3,466
3,363
3,260
3,158
3,056
2, 955
2,854
2,753
2,652
2,552
2,453
2,353
2,254
2,156
2,058
1,960
1,862
1,765
1,668
1.572
1,476
1,380
1,284
1,189
1.094
1,000
906
812
718
625
532
440
348
256
164
+73
-18
-109
-199
-289
-379
-469
-558
,-647
-735
-824
0.03
Feet
6,512
6,397
6,282
6,167
6,054
5,940
5,827
5,715
5,603
5,492
5,381
5,270
5,160
5,050
4,941
4,832
4,724
4,616
4,508
4,401
4,295
4,188
4,082
3,977
3,872
3,767
3,663
3,559
3,456
3,353
3,250
3,148
3,046
2,945
2,843
2,743
2,642
2,542
2,443
2,343
2,245
2,146
2,048
1,950
1,852
1,755
1,659
1,562
,496
,370
,275
,180
,085
990
896
803
709
616
523
431
338
247
155
+64
-27
-118
-208
-298
-388
-478
-567
-656
-744
-833
0.01
Feet
6,500
6,385
6,270
6,156
6,042
5,929
5,816
5,704
5,593
5,480
5,369
5, 259
5, 149
5,039
4,930
4,821
4.713
4,605
4,498
4,391
4,284
4,178
4,072
3,966
3,861
3,757
3, 653
3,549
3,446
3,343
3,240
3, 138
3,036
2,934
2,833
2,733
2,632
2,532
2, 433
2,334
2,235
2,136
2,038
1,940
1,843
1,746
1. 649
1, 552
1, 456
1,361
l,2f.5
1,170
1, 075
981
887
794
700
607
514
421
329
237
146
+55
-36
-127
-217
-307
-397
-486
-576
-665
-753
-841
0.05
Feet
6,489
6,374
6,259
6,145
6,031
5,918
5,805
5,693
5,581
5,469
5,358
5,248
5,138
5.028
4,919
4,810
4,702
4,594
4,487
4,380
4,273
4,167
4,061
3,956
3,851
3,746
3,642
3,539
3,435
3,332
3,230
3, 128
3,026
-2, 924
2,8,23
2,723
2.622
2,522
2,423
2,324
2,225
2,126
2,028
1,930
1,833
1,736
1,639
1,543
1,447
1,351
1,256
1,161
1,066
972
878
784
690
597
505
412
320
228
137
+45
-45
-136
-226
-316
-406
-495
-585
-673.
-762
-850
0.06
Feet
6,477
6,362
6,247
6,133
6,020
5,906
5,794
5,681
5,570
5,458
5,347
5,237
5,127
5,017
4,908
4,800
4,691
4,584
4,476
4,369
4,263
4,156
4,051
3,945
3,841
3,736
3,632
3,528
3,425
3,322
3,219
3,117'
3.016
2,914
2,813
2,713
2,612
2,512
2,413
2,314
2,215
2,116
2,018
1.P21
1,823
1,726
1,630
1,533
1,437
1,342
1,246
1,151
1,057
962
868
775
681
588
495
403
311
219
128
+ 36
-55
-145
-235
-325
-415
-504
-693
-682
-771
-859
0.07
Feet
6,466
6,351
6,236
6,122
6,008
5,895
5.782
5.670
5,558
5, 447
5. 336
5,228
5,116
5,006
4,897
4,789
4,681
4,573
4, 465
4, 3->8
4, 252
4,146
4,040
3,935
3,830
3,726
3,622
3,518
3.415
3,312
3.209
3,107
3,005
2,904
2,803
2, 703
2,602
2,502
2.403
2,304
2,205
2. 107
2.009
1,911
1,814
1,717
1,620
1,524
1,428
1,332
1,237
1,142
1,047
953
859
765
672
579
486
394
302
2'0
118
+ 27
-64
-154
-244
-334
-424
-513
-602
-691
-780
-868
0.08
Feet
6,454
6,339
6,225
6,110
5,997
5,884
5,771
5,659
5, 547
5, 436
5,325
5,215
5,105
4,995
4,886
4,778
4,070
4,562
4, 455
4,348
4,241
4,135
4,030
3,924
3,820
3,715
3,611
3,508
3.404
3,301
3,199
3,097
2,995
2,894
2,793
2,692
2.592
2,493
2,393
2,294
2,195
2,097
1,999
,901
,804
,707
.610
,514
,418
,322
1,227
1,132
1,038
943
849
756
663
570
477
384
292
201
109
+ 18
-73
-163
-253
-343
-433
-522
-611
-700
-788
-877
0.09
Feet
6,443
6,328
6, 213
6,099
5,986
5,872
5,760
5,648
5,536
5,425
5,314
5,204
5.094
4,985
4,876
4,767
4,659
4, 551
4,444
4,337
4,231
4,125
4,019
3,914
3,809
3,705
3,601
3,497
3,394
3,291
3,189
3,087
2, 985
2.884
2, 783
2,682
2,582
2,483
2,383
2,284
2,185
2.087
,9»9
,891
,794
,697
,601
,504
,408
,313
,218
,123
,028
934
840
746
653
560
468
375
283
192
100
+9
— S2
-172
-2fi2
-352
-442
-531
-620
-709
-797
-885
9-5
-------
BAROMETRIC PRESSURE AT VARIOUS ALTITUDES
(continued)
(Abridged from the Smithsonian Tables]
Term for temperature: 0.002039 (T—50°) z
For temperatures^™ £ |;}the values are to
Mean tempera-
ture T.
"F.
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
as
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
6
4
3
2
1
0
°F.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
8s
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Approximate elevations obtained from Table VI
1000
Fttt
2
4
6
8
10
12
14
16
18
20
22
24
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
71
73
75
77
80
82
84
86
88
90
92
94
96
98
100
102
2,000
feet
4
8
12
16
20
24
29
33
37
41
45
49
53
57
61
65
69
73
77
82
86
90
94
98
102
106
110
114
118
122
126
130
135
139
143
147
151
156
159
163
167
171
175
179
184
188
192
196
200
204
3,000
Feet
6
12
18
24
31
37
43
49
55
61
67
73
80
86
92
98
104
110
116
122
128
135
141
147
153
159
165
171
177
184
190
196
202
208
214
220
226
232
239
245
251
257
263
269
275
281
287
294
300
306
4,000
Feet
8
16
24
33
41
49
57
65
73
82
90
98
106
114
122
130
139
147
155
163
171
179
188
196
204
212
220
228
236
245
253
261
269
277
285
294
302
310
318
326
334
343
351
359
367
375
383
391
400
408
5,000
Feet
10
20
31
41
51
6.1
71
82
92
102
112
122
133
143
153
163
173
184
194
204
214
224
234
245
255
265
275
285
296
306
316
326
336
347
357
367
377
387
398
408
418
428
438
449
459
469
479
489
500
510
6,000
Feet
12
24
37
49
61
73
86
98
110
122
135
147
159
171
184
196
208
220
232
245
257
269
281
294
306
318
330
343
355
367
379
391
404
416
428
440
453
465
477
489
502
514
526
538
551
563
r6
687
599
612
7,000
Feet
14
29
43
57
71
86
100
114
128
143
157
171
186
200
214
228
243
257
271
285
300
314
328
343
357
371
385
400
414
428
442
457
471
485
500
514
628
542
557
571
585
599
614
628
642
657
671
685
699
714
8,000
Feet
16
33
49
65
82
98
114
130
147
163
179
196
212
228
245
261
277
294
310
326
343
359
375
391
408
424
440
457
473
489
506
522
538
555
571
587
sot
620
•536
652
1369
685
701
718
734
750
767
783
799
816
9,000
Feet
18
37
55
73
92
no
128
147
165
184
202
220
239
257
275
294
312
330
349
367
385
404
422
440
459
477
495
514
532
551
569
587
606
624
642
661
679
897
716
734
752
771
789
807
826
844
862
881
899
918
10,000
Feet
20
41
61
82
102
122
143
163
184
204
224
245
265
285
306
326
347
367
387
408
428
449
469
489
510
530
551
571
591
612
632
652
673
693
714
734
754
775
795
81«
836
856
877
897
918
938
958
979
999
1,020
9-6
-------
ANGLE OF INCLINATION OF A MANOMETER
NECESSARY TO PRODUCE DESIRED
MAGNIFICATION
UJ
UJ
O
UJ
Q
z
o
N
Di
o
x
Q
Z
I/O
O
o
z
z
LU
O
z
2.0 3.0 4.0 6.0 8.0 10
MAGNIFICATION
20 30 40 50 60
See Reference No. 20
9-7
-------
SECTION 10 PROPERTIES OF PART/CULATES
Specific Gravities of Wind Erosion Products, Industrial Dusts and Combus-
tion Products 10-1
Specific Gravities of Some Common Minerals 10-2
Specific Gravities of Common Metals 10-3
Diameters and Specific Gravities of Selected Pollen Grains . 10-4
Sizes of Airborne Particulates (M.S.A.) 10-5
Characteristics of Particles and Particle Dispersoids 10-6
Size and Characteristics of Air-Borne Solids (Frank Chart) 10-8
Limits of Particle Size Measuring Equipment 10-9
Physical Properties of Flyash 10-10
Standard U.S. and Tyler Screen Scales 10-11
-------
h-
uo
ID
Q
oo
Q.
O.
on
u_
o
oo
LU
O
y
u.
O
LLJ
Q.
00
CO
-+-*
CJ
d
-O
o
SH
a
d
_o
CO
d
e
0
U
Industrial dusts
en
o
d
•o
o
S-t
OH
o
• rH
en
O
cu
1
•rH
cd
bD
o
•rH
• rH
CJ
O>
a
CO
_i
UJ
/o
en
co ^
rH O
cu •4J
O . rH
cenos
incine
sawdust
r— 1
1
O
CO
o
a
en
4->
CO
0
a
CO CO CO CO
« "2 3 o a
a % 3 0 3
plastics, gums, resj
most organic compoi
many hydrated salts
Na2SO4- 12H2O, Na2
CaCOo- 5H9O (Carna
O &
0
CO CU
o ^
'So TO
o
talc, micas, cryoliti
fluorite
rft
(Jl
rH CO
Cti "t->
CO g
2 P
CO '/"I
tfH ^
.
f" rn
calcit
mica:
co
.
CO
1
CD
CM'
en nj" cjj
^ d rH -
^ «J .-^
asbestos, metal pow<
corundum, lime, ga]
garnets, barium,
strontium, hematite,
salts, etc. , magneti
marcasite, pyrite,
willemite, zincite
^
CO j?
, K cti
co ,2} be
c r 1 -2
O ^ ( *'"'
bD CO M rH
rrt ft CO
tl fiT "T3 ni
*3 " 4J 'H 4J
TO rH -rH CO -rH
. CO Cn rH
-i 4J JH
cti -a >, 3 a
rQ O ft rH CO
co
,
CO
A
10-1
-------
SPECIFIC GRAVITIES OF: SOME COMMON MINERALS
Borax
Sylvite
Bauxite
Sulfur
Stilbite
Halite
Serpentine
Natrolite
Sodalite
Graphite
Gypsum
Apophyllite
Brucite
Leucite
Microcline
Orthoclase
Nepheline
Kaolinite
Albite
Oligoclase
Quartz
Andesine
LabradorUe
Scapolite
C alette
Plagioclase
Talc
Anorthite
Beryl
Wollastonite
Dolomite
Phlogopite
1.7
1.99
2. 0 -
2.05
2.1 -
2.16
2.2 -
2.25
2.30
2.3
2.32
2.3 -
2.39
2.45
2.54
2.57
2.55
2.6 -
2.62
2.65
2.65
2.69
2.71
2.65
2.72
2.62
2.7 -
2.76
2.75
2.8 -
2.85
2.86
2.55
- 2.09
2.2
2.65
2.4
- 2.50
- 2.57
- 2.65
2.63
- 2.74
- 2.76
2.8
-2.8
2.9
Muscovite
Lepidolite
Anhydrite
Aragonite
Biotite
Cryolite
Amblygonite
Lazulite
Magnesite
Tourinaline
Tremolite
Apatite
Spodumene
Andalusite
Fluorite
Hornblende
Sillimanite
Diopside
Augite
Olivine
Enstatite
Diaspore
E pi dote
2.
2.
2.
2.
2.
2.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
3.
HemimorphiteS
Sphene
Realgar
Diamond
3.
3.
3.
76
8 -
89
95
8 -
95
0 -
0 -
0 -
0 -
0 -
15
15
16
18
2
23
2 -
2 -
27
2 -
35
35
-
3
-
3
-
3
3
3
3
3
-
-
-
3
3
-
3
-
-
3
.
2
.
3
.
.
.
.
0
.
2
*
1
1
2
1
98
0
.25
,
3
3
3
.
.
4
.
3
3
.4-3,
4 -
48
5
3.
RhodochrositeS. 45 -
Garnet
Spinel
Kyanite
Rhodonite
3.
3.
3.
3.
5 -
6 -
56
58
4.
4.
3
.
.
.
3
4
.
5
.
.
20
30
20
37
45
45
.5
55
3
3
.60
0
- 3.
-3.
66
70
Staurolite
Chrysoberyl
Azurite
Side rite
Malachite
Celestite
Sphalerite
Corundum
Willemite
Chalcopyrite
Rutile
Enargite
Barite
Stibnite
Ilmenite
Pyrolusite
Molybdenite
Zircon
Marcasite
Pyrite
Franklinite
Magnetite
Z'ncite
Cuprite
Arsenopyrite
Cerussite
Cassitertte
Galena
Cinnabar
Copper
Silver
3.
3.
3.
3.
3.
3.
3.
4.
3.
4.
4.
4.
4.
4.
4.
4.
4.
4.
4.
5.
5.
5.
5.
6.
6.
6.
6.
7.
8.
8.
65
65
77
83
9 -
95
9 -
02
9 -
1 -
18
43
5
52
7
75
62
68
89
02
15
18
68
0
07
55
8 -
4 -
10
9
- 3
- 3
- 3
4.
- 3
4.
4.
4.
-4
-4
-4
-4
7.
7.
.7J
.8
.8*
03
.91
I
2
3
. 2£
.45
.62
.73
1
6
10.5
10-2
-------
SPECIFIC GRAVITIES OF COMMON METALS
Aluminum
Antimony
Arsenic
Barium
Beryllium
Bismuth
Cadmium
Calcium
Cerium
Cesium
Chromium
Cobalt
Copper
Gallium
Germanium
Gold
Indium
Iridium
Iron
Lanthanum
Lead
Lithium
Magnesium
Manganese
Mercury
Molybdenum
Neodymium
Nickel
symbol
Al
Sb
As
Ba
Be
Bi
Cd
Ca
Ce
Cs
Cr
Co
Cu
Ga
Ge
Au
In
Ir
Fe
La
Pb
Li
Mg
Mn
Hg
Mo
Nd
Ni
sp. gr. element
2.699
6.618
5.13
3.5
1.84
9.781
8.648
1.54
6.90
1.873
6.92
8.71
8.92
5.903
5.46
18.88
7.28
22.42
7.85
6.15
11.342
0.534
1.741
7.42
13.546
10. 2
6.96
8.60-90
Niobium
Osmium
Palladium
Platinum
Potassium
Praseodymium
Rhenium
Rhodium
Rubidium
Ruthenium
Selenium
Silver
Sodium
Strontium
Tantalum
Tellurium
Thallium
Thorium
Tin (white)
Tin (grey)
Titanium
Tungsten
Uranium
Vanadium
Yttrium
Zinc
Zirconium
>
symbol
Nb
Os
Pd
Pt
K
Pr
Re
Rh
Rb
Ru
Se
Ag
Na
Sr
Ta
Te
Tl
Th
Sn
Sn
Ti
W
U
V
Y
Zn
Zr
sp.gr,....
8.4
22.5
12.16
21.37
0.87
6.475
20.53
12.44
1.532
12.06
4.3-8
10.492
0.9712
2.50-58
16.6
6.25
11.86
11.3
7.29
5.8
4.5
18.6-19. 1
18.7
5.96
5.51
6.92
6.44
10-3
-------
DIAMETERS AND SPECIFIC GRAVITIES OF SELECTED POLLEN GRAINS
Common
Name
Giant ragweed
Burweed marsh elder
Short ragweed
False ragweed
Marsh elder
Southern ragweed
Western ragweed
Cocklebur
Russian thistle
Palmer's amaranth
Western water hemp
Mexican fireweed
Annual sage
Tall wormwood
Sagebrush
Nettle
Red sorrel
Hemp
English plantain
Bluegrass
Bluegrass
Bermuda grass
Orchard grass
Timothy
Rye
Corn
Sycamore
Mountain cedar
Hazelnut
Birch
Alder
Ash
Cottonwood
Elm
Bur oak
Shingle oak
Walnut
Beech
Hickory
Scotch pine
Bull pine
Botanical
Name
Ambrosia trifida
Iva xanthifoiia
Ambrosia elatior
Franseria acanthlcarpa
Iva ciliata
Ambrosia bidentata
Ambrosia psilostachya
Xanthium commune
Salsola pestifer
Amaranthus palmerl
Acnida tamariscina
Kochia scoparia
Artemisia annua
Artemisia caudata
Artemisia tridentata
Urtica gracilis
Rumex acetosella
Cannabis sativa
Plantago lanceolata
Poa pratensis
Poa pratensis
Capriola dactylon
Dactylis glomerata
Phleum pratense
Secale cereale
Zea mays
Platanus occidentalis
Juniperus sabinoldes
Corylus americana
Betula nigra
Alnus glutinosa
Fraxinus americana
Populus virginiana
Ulmus americana
Quercus macrocarpa
Quercus imbricaria
Juglans nigra
Fagus grandifolia
Carya ovata
Pinus sylvestris
Pinus ponderosa
Diameter in
Microns
19.25
19.3
20.0
22.0
23.0
23.0
26.4
27.0
23.6
25.8
27.5
32.7
20.4
21.0
25.85
14.0
21.45
25.0
27.5
28.0
30.0
28.5
34.0
34.0
49.5
90.0
22.22
22.8
23.6
24.6
26.0
27.1
30.0
31.2
32.3
33.1
35.75
44.0
45.0
52.0
60.0
Specific
Gravity
0.52
0.79
0.55 *
0.75
0.56
0.50
0.57
0.45
0.90
1.02
1.01
0.97
1.02
1.04
1.03
0.77
0.78
0.82
0.97
0.90
0.90
1.01
0.91
0.90
0.98
1.00
0.92
1.08
1.09
0.94
0.97
0.90
0.79
1.00
1.04
1.04
0.93
0.94
0.79
0.45
0.45
Crawford, J. H., Pub. Health Rep. 64:1195,
1949. reports a value of 1. 3.
10-4