1906.] 



Tnh: Potash Deposits OF Germany;; 



221 



It is more difficult to attempt an explanation of the reported 

 ■diurnal variation in the quality and quantity of milk. The 

 evening milk is usually richer than the morning, but experi- 

 mental results are not in agreement with regard to the point. 

 The investigations made by Ingle seemed to prove that when 

 cows are milked at six-hour intervals the watery constituents 

 are much increased between 1 1 p.m. and 5 a.m. An exactly 

 ■opposite result was obtained at Offerton in the case of cows 

 milked at twelve-hour intervals. The experiments, which were 

 described by Bryner Jones, showed that a richer milk was 

 obtained in the morning, and a greater quantity in the evening, 

 ■even exceeding that got after a period of fourteen hours. Were 

 the results of experiments more in agreement, it might be 

 possible to suggest, for example, that the general effect which 

 is believed to be true from the experience of dairy farmers, is 

 ■due to nervous change during the hours of darkness. But 

 further experiments are evidently necessary before the problem 

 •can even be stated. - ■ 



The potash deposits of Germany were first discovered in 1839 

 at Magdeburg, where in boring for rock salt a layer of potash and 

 magnesium salts was met with covering the 

 The Potash rock salt. Their value, for agricultural and 



erected at Stassfurt for the production from these salts of 

 chloride of potash, &c., and thus was laid the foundation of the 

 chemical industry which has since reached such large dimensions. 

 About this time the attention of agriculturists was directed to 

 these salts by two prominent agriculturists, Rimpau and Schultz- 

 Lupitz, who had proved their great value in improving the peaty 

 and sandy soils of the Province of Saxony. 



The deposits are now found in Magdeburg, Anhalt, Hanover, 

 Brunswick, Thliringen, and elsewhere in neighbouring parts of 

 Germany, and they derive very great importance from the fact 

 that no large potash deposits are known to exist in any other 

 part of the world, though smaller deposits have been discovered 

 in Galicia, in Persia, and in the Punjab. 



A. Meek. 



Deposits 

 of Germany. 



other purposes was not at first recognised, 

 but in 1 86 1 the first chemical factory was 



