80 _W. Hopkins on Changes of Climate. 
enced ina small degree by the same cause. If we place them a 
little more southward, but still allowing for the tendency of the 
slight northern projection of the continent in that region to inflect 
these summer isothermals to the north, their positions will be ap- 
proximately correct for our supposed ease. Further west we must 
destroy the southward inflections produced by the Atlantic, and 
continue the isothermals almost directly west to the most n north- 
ern points through which the existing ones pass respectively 7 
the northwestern part of N. America, about the meridian of Li 
or 140° of W. long. Se 
_ Again, the isothermal still more to the south may be comeidenll 
as unaffected by the filling up of the Atlantic, at the points at 
which they meet the meridians of 60° E. long. (that of the Ural 
Mountains, ) and at those of 100° to 120° W. long. Straight lines 
joining these respectively would represent the isothermals of the 
— space independently of merely local variations. | 
king the same places as before, we have the sp eperenn ye 
salts i in ae case sagen us fos their spared res -— 
i oo 
Ol ae New 
At present. ro eer te Ri Continents 
4 " united, 
‘THE ALPS. va 
Temperature for January, ... ~ 38 F.) | 3 . 14 9 | 
* July, eal ayy): 75 
| Mean annual temperature, ne. 555 445 
SNOWDON, 
| Temperature for Jauuary, . .« 38 F. as a 
WP Be « July, ae ts 61 ' 665 t 
Mean annual temperature, . . A9°5 29-75 
NORTHERN EXTREMITY OF SCOTLAND.  — 
“Temperature for panna ye ba 365 F. 195 +22 F., ‘i 
« Jul aria Md 62 t 
Mean annual temperature, oh 46 25 
~") GENTRE OF ICELAND. 
bs ag -95 
aie Pe eaeery, wee “ F. ' | -99° i 5 F, ; id 
_ Mean atmual temperature (deducec| )',, “V4 . 
penn the athlete wh Hi 
The. isothermal of 32° F. would pass nearly through Madrid. 
The w e of western Europe would be converted ait 
a: fete “continental climate similar to that of northe: 
ba Phe last hypothetical case I propose to Louisieg js that in 
which all the ido of Hucope should be submerged eta 
the surface of th 
rope except th 
sree ees 
