324 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



phosphate of potash, a disease was developed sooner or later, 

 which, starting with a positive heaping up of the starch, end- 

 ed in preventing the starch from being taken into the chloro- 

 phyl grains, and rendered useful in vegetation. Soda and 

 lithia were found incapable of replacing potash in a physio- 

 logical point of view ; furthermore, while soda was found 

 to be perfectly useless to the plant, lithia, when introduced, 

 proved to be positively destructive to the vegetable tissues. 

 19 C, August 5, 245. 



SPEEDY GROWTH OF RADISHES. 



In the publications of the Acclimatization Society of Pa- 

 lermo we are informed that radishes may be obtained at any 

 season, and very quickly, in the following manner. The 

 seeds are to be first soaked for twenty-four hours, and then 

 placed in bags and exposed to the sun. They will begin to 

 germinate in about twenty-four hours, and are then to be 

 set in a box filled with well-manured earth, and moistened 

 from time to time with lukewarm water. In five or six days 

 the radishes will attain the size of a small onion. . To grow 

 radishes in winter, the box is to be placed in a warm cellar, 

 covered with a top, and the earth moistened from day to day 

 with lukewarm water. 9 C,July,5?>. 



CHINESE USE OF ARSENIC IN AGRICULTURE. 



Arsenic is said to be used in China for the purpose of pre- 

 serving the young and tender roots of plants from the attacks 

 of field-mice and other vermin, which application is said, in 

 addition, to exercise a favorable influence upon the growth 

 of the plant and its yield of fruit. 3 A, August 5, 93. 



EFFECT OF VARIOUS MANURES ON THE GROWTH OF GRASS. 



Experiments have been recently instituted by the Agricul- 

 tural College at Worms, Bavaria, for the purpose of ascer- 

 taining the relative effect of several different manures upon 

 the growth of grass. In presenting an account of the results 

 obtained, we may state, for the more satisfactory understand- 

 ing of the subject, that the " morgen" amounts to nearly three 

 fifths of an acre. Muck increased the yield of hay, per morgen, 

 by 1 cwt.,but deteriorated the quality of the grass. But this is 

 believed to have resulted from the use of muck not sufficient- 



