36 
M. Humboldt on Isothermal Lines , 
23 Guittard. Only three years. Mean temp, a little too 
high. Eastern part of Europe. A continental climate. 
24 Four years of observations, by M. de Salis Sewis, calcu- 
lated by M. Wahlenberg. Mountains of the Grisons. 
2 5 Kirwan. Irish Trans, viii. 203. and 269- Specimen of 
the climate of the islands. Coldest days, 23°; interior of the 
ground, 49°.28. Hamilton. 
2 6 The climate of Berne is a continental climate, in compari- 
son with that of Geneva ; there is no lake near it. 
2 7 Seven years of observations. Saussure. Mean temp. 50°74. 
Voy. § 1418. I find the mean temp, from 1796 — 1815, 49°.7. 
Interior of the earth, 51°.98. Pictet, Bibliotheqae Brit. 1817, 
iv. 109. 
2 8 Six years. 
29 Austria. Berlin, Lat. 32° 31'; mean temp, probably 46°. 4 
to 47°. 3 ; according to Beguelin, 48°. 74 ; springs, 49°. 28. Ra- 
tisbon, Lat. 49°; height, 1,104 feet; mean temp. 47°.66. Mu- 
nich, Lat. 48° 8'; height, 1,608 feet; mean temp. 50°.74. 
3 0 Ramond. Seven years of excellent observations. The 
mean of the months, at noon, well ascertained ; winter, 39°.92 ; 
spring, 57°.02 ; summer, 70°. 88 ; autumn, 57°.92. Mem. Inst. 
1812, p. 49. Cotte, mean temp. 51°.26. 
3 1 Wahlenberg, Flor. Carp. p. 90. Continental climate. 
Height of the observatory, 474 feet. 
3 2 Two years, near Boston, in New England. Transatlantic 
climate. The thermometer sometimes descends to 0°. 
3 3 Eleven years (1803 — 1813) of observations made at the 
observatory. A greater number of years will, perhaps, give the 
mean temp, a little higher. Vaults, 53°.06. Kirwan finds for 
Paris, from seven years of observations of unequal value, 51°.62 ; 
he fixes upon 52°. 7. Cotte, from 29 years of observations, 
(Journ. de Pliys. 1782, July), 53°.24. Cotte, for 33 years, 
(1763 — 1781, Mem. Instit. iv. 266.), 52°.34. The extraordinary 
year of 1816 offers the mean temp, of 48°.74; winter, 37°.04 ; 
spring, 48°.92 ; summer, 59°.54 ; autumn, 50° : the preceding 
year, 1815, offers a mean temp, of 50°.74; winter, 37°.04; spring, 
52°.7 ; summer, 62°.78 ; autumn, 50°.74. Arago. Mean temp, 
of Montmorency, for 33 years, 50°. 74 ; height, 498 feet. Cotte, 
