1818.] Distribution of Heat over the Globe, 193 



4 .' Transatlantic climates west of the Alleghanys. Good ob- 

 servations, from 1806—1813. Col. Mansfield (Drake p. 93). 

 Minimum of the winter, from 5° to 9-4°; Jan. 1797, as low as 

 -16-6°, for 39° latitude. Maximum, 89-6° to 107-6° in the 

 shade, without reflection; £ of all the winds S.W. ; springs 

 near Cincinnati, 54-4°. Little snow falls ; but it is abundant 

 between lat. 40° and 42°. 



42 Three years only. Bougourd. Dijon, height, 810 feet; 

 lat. 47° 19' ; mean temperature, 50-9°. Besancon, height, 804 

 feet; lat. 47° 14'; mean temperature, 51° 2'. 



43 Six years. Duplessis, and Boudan. Temperature of the 

 summer too high? Rochelle, 53°. Poitiers, 52-6°. 



44 Amyot. Six years. Concave Asiatic summit. Three 

 months below 32°, as at Copenhagen ; the summer like that at 

 Naples. 



45 One of the best determined points. The years 1789 — 1812 

 are calculated in decads of days. Observations of the Astro- 

 nomer Reggio, April, 55-8°; Oct. 58-1°. The two decads 

 which approach the nearest to the mean temperature of the year, 

 are, the first of April, 53-4°; and the last of Oct. 54-6°. The 

 mean temperatures for January have varied in the last 10 years 

 from 25° to 38-4°; those of July, from 71*4° to 78-4°; the mean 

 of the years, from 54-5° to 57-2°. Reggio, taking only 24 maxima 

 and minima in a year for 1763 — 1798; mean temperature, 

 55-4° (Ephem. Mil. 1779, p. 82). 



46 Ten years. Guyot. Lyon, 528 feet, 55-8°. Mafra, near 

 Lisbon, lat. 38° 52' ; height, 600 feet ; mean temperature, 54-3°, 

 too small. Mem. de Lisbonne, ii. 105 — 158. 



47 Seven years (1777—1782). St. Jaques de Sylvabella. The 

 thermometer descends sometimes to 23°. Cotte (Traite de Met. 

 ii. 420). 34 years (Raymond in Mem. de la Soc. de Med. 

 1777, p. 86) give 62°. Cotte (Journ. de Phys. xxxix. 21) 

 fixes it at 58-6°. Kirwan, at 61-4°. The observations made at 

 the Royal Observatoiy of Marseilles can alone decide. 



48 Ten years. Nismes, 60-2° ; Perpignan, 59-6 ; Tarascon, 

 60°; Aries, 59°; Rieux, 57-2°; Montauban, 55-6°; Tonains, 

 54-8° ; Dax, 54-2° ; Rodez, 57°; Aix, 56-6°. Under the equator, 

 57-8°, at 9,000 feet of elevation. 



49 William Humboldt. Calandrelli, 60°. The thermometer 

 sometimes descends to 36-5°, and rises to 99-5°. Naples, 67-1° ; 

 Toaldo, probably 63-5°; Florence, 61-6°; Tartini, too high; 

 Lucca, 60-4°; Genoa, 60-2°; Bologna, 56-3°; Verona, 55-8°; 

 Venice, 56*5° ; Padua, 55*6°. Kirwan regards it as an esta- 

 blished fact, that in Europe, the mean temperature, in latitude 

 40°, is 61-8° ; in latitude 50°, 52-6°. 



so Only two years. Barberet, and d'Angos. Sheltered by 

 mountains. Estimate a little too high. 



41 Japan. A single year. Voy. de Thunberg, p. 121. 

 Climate of islands. Under the equator, 64-4°, at a height of 

 6,000 feet. 



Vol. XI. N° III. N 



