CYANAMIDE AND NITEATE OF LIME. 277 



persons about, or following the machine as well as the horses, in a 

 layer of tacky dust, so that labourers refuse to apply it. It is there- 

 fore for that reason that it is impossible to spread nitrate of lime by 

 hand, for the hands would be injured, and the wind projecting the 

 nitrate of lime about the body would endanger the eyesight. It is 

 therefore necessary (1) to find a manure distributor which will 

 obviate these drawbacks ; (2) to improve the conditions of preserv- 

 ing the product during storage." 



To obviate the deliquescent properties of nitrate of lime, it is 

 mixed with equivalent quantities of alkaline sulphates, sulphate of 

 potash or magnesia, or calcined kieserite. The product so formed 

 is not more deliquescent than nitrate of soda, and forms a dry 

 powder. 



N.B. — The author, following French custom, uses in the text 

 the term cliaux azote, "lime nitrogen," for cyanamide almost 

 throughout, but such a term is too vague and misleading. It has 

 been altered to the more intelligible trade term. Attempts to 

 differentiate the separate products of mere variation in manufacture 

 in such a vague way as ringing the changes on the precedence and 

 sequence of the two main ingredients, can only create confusion 

 where everything is plain sailing. If a distinction were at all re- 

 quired, a and y8 cyanamide ought to have been chosen. Such dis- 

 tinctions' are as ridiculous as "nitrogen sulphate " and " sulphate 

 nitrogen " w^ould be for sulphate of ammonia from bones and from 

 coal respectively. 



