HOETICULTUEIST'S EULE-BOOK, 



CHAPTER I. 



INSECTICIDES. 



The results obtained from the use of any insecticide 

 or fungicide depend upon the operator. Timeliness, 

 thoroughness, and pe?*si!*s^e7ice are the watchwords of 

 success. It is easier to keep an enemy away than 

 to drive him away. The worst foes are often the 

 smallest ones ; and the injury is often done before 

 they are detected. Be ready, and begin early. 



Insecticides are of three general types, — liquid 

 spray, powder, and fumes or vapor. 



Arsenic, — Known to chemists as arsenious acid, or white oxide 

 of arsenic. It is considered an unsafe insecticide, as its 

 color allows it to be mistaken for other substances ; but 

 in its various compounds, it forms our best insecticides. 

 From 1 to 2 grains, or less, usually prove fatal to an adult ; 

 30 grains will usually kill a horse, 10 grains a cow ; and 

 1 grain, or less, is usually fatal to a dog. In case of 

 poisoning, while awaiting the arrival of a physician, give 

 emetics, and, after free vomiting, give milk and eggs. 

 Sugar and magnesia in milk is useful. 



B 1 



