CULTIVATION. 73 



from a mean of 10-3° C. in April at a uniform rate, but more 

 quickly than in the Saaz district. In July the average is 

 19.27° C, increasing in August to 19-60° C. September is 

 warm, average 15° C. With regard to the rainfall, this 

 is most plentiful during June ; July is damp, but August 

 is drier, whilst September is about equal to July. Between 

 April and October the rainfall measures 599 mm., and the 

 year totals 9838 mm. Schwetzingen is protected on the 

 north-east by the Odenwald. 



Tiibingen (for Eottenburg) is in latitude 48'31° N., longi- 

 tude 9.02° E. ; height above sea level, 1066 feet. Total 

 warmth during the six summer months = 2562° C. The 

 mean summer temperature (six months) is 14° C. April is 

 cool (mean 7'52° C), but a sharp rise occurs between that 

 month and July (mean temperature, 19'25° C). August is 

 warm, but September cool (12"41° C), and the mean for the 

 entire year is 8'7° C. As regards rainfall, April and May 

 are moderately damp, the other summer months, especially 

 August, being more so. The summer rainfall measures 

 498*4 mm., and that of the whole year 684 mm. To the 

 south-east of this district are the Eauhe Alps (Swabian Jura), 

 and on the north the Stuttgart Mountains. 



Turning now to the American continent and examining 

 the climatic conditions of the eastern and western districts, 

 we find that — 



Albany (New York) is in latitude 42'39° N., longitude 

 73*45° W., and at an altitude of 67 feet above sea level. The 

 mean summer temperature is 18^28° C, equivalent to a total 

 heat of 3343° C, and the mean yearly temperature 8*72° C, 

 the mean temperature during the months of June, July, 

 August and September being high, namely, over 20° C. 

 April is cool, and May must also be considered a cold month 

 in comparison with June. The highest monthly mean, 

 23"2° C, is in July. May and June are the wettest mouths, 



