Lerrs & Buake—The Carbonic Anhydride of the Atmosphere. 179 
carbonic anhydride is greater in the second than in the first. A 
further consequence of Schleesing’s theory should be that the 
amount of atmospheric carbonic anhydride — especially over or 
near the sea—should vary with the temperature of the ocean, and 
therefore with latitude, and it might also be expected that ocean 
currents like the Gulf Stream would have an effect. 
Unfortunately, however, the experimental data available for 
the discussion of this point are scarcely sufficient to warrant any 
very definite conclusions. We have, however, collected in the sub- 
joined table what we consider to be the most reliable figures 
bearing on the subject. 
COzg in 10,000 Vls. of Air. 
No. 
Latitude. Locality. Observer. ie 
vations. Mean. | Maxm.| Minm. | 
Ls i a a 
58°27 IN. | Dorpat, - Dragendorff, 366 | 2°66 | 3-60 | 1:98 
55 20 N. | Lund, Claesson, . E 31 2-79 | 3°27 | 2°37 
54 42 N. | Kénigsberg, . Blochmann, 40 BO |) SL) AOil | 
54 36 N. | Belfast, Letts & Blake, . 46 2-91 | 3°81 | 2°48 
54 27 N. | Grasmere, Armstrong, 5 || BOG | B29 | Berl 
54 21 N.| Irish Sea, Thorpe, 26 | 3:08 | 3°32 | 2°66 
Dam OL NE Rostock, Schulze, 1034 2°92 | 38°50 | 2°25 
50 34 N. | Gembloux, Petermaun & Graftiau, | 525 | 2:94 | 3°54 | 2°60 
49 55 N. | Dieppe, Reiset, 104 | 2°90 | 3:24 | 2°74 
48 49 N. | Plain of Vincennes, | Muntz & Aubin, 32 238 | Soll | Ze 
29 54 N. | Florida, ¥ a g | 2:90 | 2-97 | 2°87 
19 10 N. | Mexico, al a 42-66) | 2°81) 2-62 
18 ON. | Haiti, t. hs 10 | 2°70 | 2°86 | 2-60 
14 36 N. | Martinique, . 33 5 A | Dee | Bede | Beda 
0 TS Para (Brazil), Thorpe, 31 3-28 | 3:49 | 3-07 
33 16 8. | Chili, Mintz & Aubin, § | 2°66 | 2°76 | 2°59 
43 18S. | Chubut, a . 2 | 2-79 | 2°79 | 2-79 
50 OS. Santa Cruz, 39 i 14 |) 2-66) | 2°97 || 2708 
55 58 §. Cape Horn, Hyadez, ,, 39 | 2°56 = —= 
