234, 235] Analysis of Superphosphate of Lime 145 



ANALYSIS OF REFUSE MANURES 



234. This name is used simply for want of a better j but it 

 does not exactly express what is meant. Thus, fish is, in the 

 strict meaning of the term, a refuse material, but in practice it 

 would be analysed as already described under the heading of 

 guano. The manures analysed according to the method put 

 forward in this article all contain small amounts of P 2 5 , and 

 relatively very large percentages of oxide of iron and alumina, 

 together with large quantities of organic matter. The more 

 common of these sue farmyard manure, nightsoil {corporation 

 manure), shoddy, hair, blood, horn, and soot. The most im- 

 portant constituent is generally nitrogen. 



235. Method of Analysis. 



