140 HEAT OF LOWEST STRATUM OF AIR. 



the Bermudas, passing slightly to the south of 

 Madeira ( at Punchal, in Madeira, 19°* 8, at St. 

 Cruz, in Teneriffe, 21°'6), to the African coast. 



The isotherm of 10° Cent. (50 Pahr.) runs 

 through the south of Ireland (at Dublin 9°*6, 

 Cork 10 o, 6), through Wales (being at Liverpool 

 9°-6, at Plymouth 11°, Penzance 11°-]), to- 

 wards the south of England, near London (9 0, 8), 

 leaving Prance (Paris 10 o, 5) and Belgium (Brus- 

 sels 10 o, 5) on the south, through the Netherlands 

 (Haarlem 10°, Amsterdam 9°*8, Pranecker 

 10 o, 3), it bends suddenly at the German frontier 

 to the south, west of Miinster (9° # 5), Dussel- 

 dorf (9°-5), Elberfeld (9°'l), Treves (9°'8), 

 Metz (10°-3), and Prankfort (9°-8) % to Mann- 

 heim (10°), Carlsruhe (10°), Heidelberg (10°) ? 

 it then continues in an easterly direction, touching 

 Wiirzburg(10°), through the south of Bohemia and 

 Moravia (Prague 9 0, 6, Olmutz 9°*1, Yienna 

 10°-5), the north of Hungary (Ofen 10°-5, 

 Klausenburg 10 o, 4) through Moldavia, and to 

 the south of Odessa (9° # 1), through the Black 

 Sea; it cuts the north part of the Caspian Sea 

 (Astrachan 9°'4), and probably passes to the 

 north of the peninsula of Corea under the 42nd 

 parallel, on the eastern coast of Asia. It strikes 

 the west coast of America at the mouth of the 

 river Columbia, at north latitude 46°, but de- 

 scends again, as it proceeds eastward to the 41st 



