KEEPING MANURE UNDER COVER. 



63 



the open air, and also of -keeping it in a heap under cover. Now 

 let us see how these methods compare with the practice of leav 

 ing it exposed to the rains, spread out in the yard. 



On the 3rd of November, 1854, Dr. Voelcker weighed out 1,652 

 Ibs. of manure similar to that used in the preceding experiments, 

 and spread it out in the yard. It was weighed April 30, and again 

 August 23, and November 15. 



The following table gives the actual weight of the manure at 

 the different periods, also the actual amount of the water, organic 

 matter, ash, nitrogen, etc. : 



TABLE SHOWING THE WEIGHT AND COMPOSITION OF ENTIRE MASS OF EXPERI- 

 MENTAL MANURE (NO. III.), FRESH FARM-YARD MANURE, SPREAD IN OPEN 

 YARD AT DIFFERENT PERIODS OF THE YEAB. IN NATURAL STATE. 



"One moment," said the Deacon. ''These tables are a little 

 confusing. The table you have just given shows the actual weight 

 of the manure in the heap, and what it contained at different 

 periods." "Yes," said I, "and the table following shows what 

 100 Ibs of this manure, spread out in the yard, contained at the 

 different dates mentioned. It shows how greatly manure deterio- 

 rates by being exposed to rain, spread out on the surface of the 

 yarJ. The table merits careful study." 



