SOOT CROPS. 61 



be allowed to dry before they are planted." We can 

 tboroughly recommend the following " mixed " manure for 

 the growth of potatoes :- 



£0 18 1 



The ingredients to be thoroughly mixed together, and 

 applied after setting the seed potatoes (See the author's 

 Treatise on Manures, or Manures and their Uses). (2) 



Fig. 26. — Tdknip " Fly " (Haltica nemorum). 



A. Beetle {imt. size). 



B. Beetle (enlarged). 



C. Massesof eggs (nat. size). 



Burn all infested haulms, as this destroys any hibernating 

 sclerotia, etc. 



(7) The Parasites of Tuenips {Brassica rapa). 



The Turnip Fly {Haltica nemorum, Phylletreta 



nemorum, or " turnip flea," Fig. 26) belongs to the Halti- 



cidce, a family of small beetles. They are oval insects, 



often measuring less than one-twelfth of an inch in length, 



