88 PROFESSOR FORBES’ INQUIRIES 
ing an “ equalizing curve” amongst them (as in Plate II.), we obtain the follow- 
ing equations of condition :—* 
Northern Hemisphere. Southern Hemisphere. 
80:0= ‘748 x Wy) + °252 x Lia 12:2=.790 x Wiyt -210'x Lo 
773 =682 x w,, +°318 x l,, 73:8 = "795 x wy, +°205 x I, 
69:5=-605 x We, + *395 x ten 66°7='840 x Wy ‘160 x Ls9 
56°7 = "527 x w,, + °473 x Lo 55:1=:915 x w,, +085 x L,, 
39. By elimination we obtain the following results for edther hemisphere :— 
Taste V. 
Temperature all Water Temperature all Land 
wp, i Excess due to Land. 
Latitude. 

+10° 69°°6 110°-7 41°] 
20 67 °4 98 6 al <2 
30 64 °8 76 °7 11 °9 
40 54 °8 4+] 



Curves of Land and Water Temperature deduced from a comparison of the Two Hemispheres. 

40 
to 30 
WN 
= 
: 20 
+10 
Eq. 0) 
S 
—1O 
—20 
12) 
>= 
3S —3O 
—40 
0 30 100 120 Kahr. 
Pi ee eee 
Scale of Temperature. 
40. The numbers in this table being projected (as in the figure) for each hemi- 
sphere, we obtain two well-defined curves representing the temperatures of a land 
* T employ the “equalized” mean values of Land and Water on three adjacent parallels, as in 
the footnote to par. 32, where these numbers (for the proportion of Land) are designated as L’. But 
it is worthy of notice that the simple numbers given in Tables I. and I1., both for temperature and 
amount of land, would lead to nearly the same results, 
