ME. J. PRESTWICH ON SUBMARINE TEMPERATURES. 
671 
Explanation of Map. 
PLATE 65. 
This Map is reduced, so far as relates to the hydrographical details, from the last 
edition of the Admiralty ‘ Chart of the World for Tracks.’ 
On this the observations recorded in Tables I., II., and III. are laid down according 
to the latitude or longitude given by the original observers. A few corrections have 
been made in the Tables since the Map vras engraved. In the case of these or any 
other discrepancies*, the Tables give the correct reading. In the Mediterranean only 
a portion of the numbers (without the initials) are given for want of space. 
The numbers in the Map correspond with those in the Tables, and the name of the 
observer is indicated by initial letters as under. The name of the ship is added for 
convenience of reference : 
§11., in the order of date. 
the fuller particulars and titles will be found 
in the text, 
A. Armstrong . . . 
Voyage of the ‘ Investigator ’ . . . . 
. 1850-54. 
a. Abel 
On the Voyage of the ‘Alceste’ 
. 1817. 
B. Beechey . . . . 
Voyage of the ‘ Blossom ’ * 
. 1825-28. 
i s Belcher . . . . 
Voyage of the ‘Sulphur’ 
. 1836-46. 
99 99 
Voyage of the ‘ Samarang ’ 
. 1843-46. 
Bl. Blosseville . . . 
See D’Urville 
. 1828. 
Ba. Bache 
United States Coast Survey for 1854 . . . 
. 1854. 
C. Cook 
Voyage of the ‘ Resolution ’ and ‘ Adventure ’ 
. 1772-75. 
c. Ciiimmo 
See note, p. 610 
. 1868. 
cr. Craven 
See Bache 
. 1855. 
D.f D’Urville .... 
Voyage de ‘ L’Astrolabe ’ 
. 1826-29. 
d. Dayman . . . 
Voyage of the ‘Rattlesnake ’ 
. 1846-47. 
Ds. Dunsterville . . . 
See Maury. 
E. Ellis 
On a Voyage to the Coast of Africa . . . 
. 1749. 
F. Franklin & Buchan . 
Voyage of the ‘ Dorothea ’ and ‘ Trent ’ . . 
. 1818. 
F, FitzRoy . . . . 
Voyage of the ‘ Adventure’ and ‘ Beagle ’ 
. 1826-36. 
f. Forster .... 
Voyage of the ‘Resolution’ 
. 1772-75. 
G. Graah 
Expedition to the East Coast of Greenland . 
. 1828. 
H. Horner . . . . 
See Krusenstern’s Voyage 
. 1803-6. 
I. Irving 
See Phipps’s Voyage 
1773. 
K. Kotzebue .... 
Voyage of the ‘Rurick’ 
. 1815-18. 
99 99 .... 
V oyage of the ‘ Predpriatie ’ (see Lenz) 
. 1823-26. 
* The whole group of observations to the west and north of Spitzbergen are placed rather too far (from 
|° to 1°) north. 
t D should have stood for Dayman and U for D’Urville ; as it is, U stands for D’Urville in the north 
hemisphere and D in the south hemisphere. 
