575 
of Edinburgh , Session 1868 - 69 . 
The mean difference of these temperate coasts of North America, 
as determined by the crossings of the range lines on every fifth 
parallel of latitude, is 25°. 
In Europe and Asia — 
1 
Latitude N. 
West Coast. 
Range. 
East Coast. 
Range. 
Difference of 
Range. 
o 
O 
O 
Bergen, Norway, 
25° 
Okhotsk, . . 
66° 
41° 
57° | 
Riga, Russia, . 
Mandal, Norway, 
41° 
28° 
\ PortAyan,Sea ) 
) of Okhotsk, ) 
60° 
! 
i 
19° 
32° 
51° 
Ostend, France, 
26° 
Mariinsk (Amur), 
55° 
29° 
o 
o 
Lisbon, . . . 
15° 
Pekin, . . . 
56° 
41° 
31° 
Jerusalem, . . 
o 
00 
Shanghae, . . 
CO 
o 
15° 
22° 
Djedda, Arabia, 
8° 
Canton, . . 
35° 
27° 
Mean Difference, . 
• • 
• 
29° 
The difference of range on these coasts, determined as before 
from the range lines, is again 25°, the same amount as we obtained 
for North America, thus establishing a close agreement in the re- 
lations of the coasts of these two continents. 
The mean difference between the east and west coasts of that 
portion of North Africa which falls in the temperate regions is 10°, 
the Red Sea coast having that amount of range more than the 
Atlantic coast. 
In South America we find Valparaiso in latitude 33° S. on the 
west coast, with a range of only 9°, and in latitude 35° S. on the 
east coast we have Monte Video and Buenos Ayres, with ranges 
of 21° and 25°, thus showing a difference between the coasts 
at this point of 14°. The range lines give a mean difference 
of 12°. 
Observations on the west coast of South Africa, in the temperate 
region, are entirely wanting; but since the line of no January and 
July range falls 10° of latitude farther to the south in the 
Atlantic on the west, than it does on the east coast, where it just 
reaches the equator, we may perhaps assume that the west coast of 
South Africa has also a less range than the east, probably amount- 
ing to 5°. 
In the temperate regions of South Australia the range lines give 
a mean difference between the coasts of 10°, the range on the east 
coast again predominating to this amount. 
4 f 
VOL. VI. 
