THE RATE OF DECREASE OF TEMPERATURE^ ETC. 93 



2. Great St. Bernard and Geneva. 



Mean annual rainfall, from eleven years' observations, inches. 



at Grreat St. Bernard =45*64 



Mean annual rainfall, from eleven years' observations, 



at Geneva =3i*6i 



The ratio is therefore =1*44 



3. Dodabetta and Madras. 



Mean annual rainfall, from eight years' observations, 



at Dodabetta = 8472 



Mean annual rainfall, from eight years' observations, 



at Madras =56*04 



The ratio is therefore =1*51 



4. Dodabetta and Bombay. 



Mean annual rainfall, from eight years' observations, 



at Dodabetta = 84*72 



Mean annual rainfall, from eight years' observations, 



at Bombay =73*40 



The ratio is therefore =1*15 



Stations in the Belt. 



1 . Madrid and Lisbon. 



Mean annual rainfall, from five years' observations, 



at Madi'id = 9*86 



Mean annual rainfall, from five years' observations, 



at Lisbon =30*68 



The ratio is therefore only =0*32 



2. Alagir and Koutais. 



Mean annual rainfall, from four and a half years' 



observations, at Alagir =37*67 



Mean annual rainfall, from four and a half years' 



observations, at Koutais = 57*94 



The ratio is therefore =0*65 



3. Alexandropol and Lenkoran. 



Mean annual rainfall, from six years' observations, 



at Alexandropol = 1 575 



Mean annual rainfall, from four years' observations, 



at Lenkoran =49*48 



The ratio is therefore =o'3i 



Grouping together the four highest and the three lowest 



