CYANIDE Gas Remedy for Scale Insects. 



44 i 



contact with it. If the cloth does not lie heavily aronnd the tree a 

 little soil should be shovelled on it to prevent the oscape of any gas 



-Fk;. 12. — Ijjjjp.i- l'li(ito<iraijli. — A desirable type of box cover for fumiiiatini;- small 

 trees. The treatuieiit of A'cry small trees under sheet or dome covers is not 

 advisable unless a frame is used to expand the cloth to definite tlimcnsions. 

 Loivrr I'hofonrwpli. — Putting a charge of chemicals under a dome cover. 

 The man at tlie left is supporting on his shoulder the iron hoop used to 

 keep the mouth of the cover expanded, 'i'hc man wlm handles ilic 

 chemicals should not touch the cloth. 



fidiu i)ciie;iili. Tlie cover should lie leH on Jor three-quariers of an 

 lionr at least, arid for an lionr when there is no need to Imrry and 



ir. 



