72 HOI'S. 



continues to rise unifornaly month by month to a maximum 

 in July (mean for the month, 19*3° C), from which date it 

 begins to recede, at first slowly (mid- August, 17° C), after- 

 wards rapidly, so that the mean for September is only 11'2° C. 

 The mean temperature for the whole year is 9"0° C. The 

 rainfall in April is heavy, being 75 "6 mm. (1 mm. - -is of 

 an inch), but diminishes ra^dly from thence onwards, 

 and is at a minimum in June, to again increase to a maxi- 

 mum in the fpllowihg month. August and September are 

 moderately damp. The total rainfall for the six summer 

 months is 377'! mm., and for the whole year 499"3 mm. 

 The hop gardens are protected on the north and on the south- 

 west by hills. 



Dauba (observing station, Weisswasser) is in latitude 

 50-30° N. and longitude 13-28° B., the height above sea 

 level being 998 feet. Total heat of six summer months = 

 2460° C. Average temperature during April 10° C, rising 

 to 12-4° C. in May, 14-4° C. in June, and 18-3° C. (mean) 

 in July, this being the maximum. August shows a mean 

 temperature of 15-8° C, but September is cool, the average 

 being 10-3° C. Mean summer temperature, 13-5° C. ; mean 

 annual temperature, 7-7° C. The Dauba district has a 

 greater rainfall than Saaz. April, May and June are uni- 

 formly medium moist, and July is the wettest month, August 

 and September being drier than the first three months of 

 summer. The total rainfall for the six months of summer is 

 446*4 mm., and for the whole year 709-4 mm. The cold 

 northerly and north-east winds are kept back by the Lau- 

 sitz Mountains. 



Mannheim (for the Schwetzingen district) is in latitude 

 49-29° N., longitude 8-27° E. ; height above sea level, 368 

 feet. Total warmth during the six summer months = 

 2938-9° C. The mean summer temperature is 16-06° C, 

 and that of the entire year 10-18° C. The temperature rises 



