No. 2.] Reprints and Extracts. 59 



of one kind especially grown, fifty per cent, were ' midged,' and af the other 

 kind named not one could be founc to have escaped. In a laboratory experiment 

 Professor Smith found that where nitrate of soda was sprinkled in quantity that 

 would represent a fair top-dressing in ordinary field use, on sand which maggots 

 had gone down, that not ten per cent, of the larvae were alive (so far as examined) 

 in their cocoons ; and where a double quantity of nitrate was applied, a still lesser 

 proportion of the maggots were found to be alive. 



" Muriate of potash in about the same quantities showed results of respective/y 

 nearly one-half or three-quarters of the maggots dead in their cocoons." 



G. I. C. P. 0.— No. 161 E. & A.- 2-8-1800.- 1,000.— E. B, 



