Steam Pump — Plant Diseases, 203 



be long and carefully studied before you attempt to do 

 anything involving outlays. The only safe rule is to go 

 slow — and make sure you fully understand everything 

 vou undertake. 



Deane Boiier ar.d Pl 



The PrMPixG Apparatus illustrated by the fore- 

 goin;^ cut is the one alluded to in Part I, on page 24, in 

 connection with the subject of " Irrigation." 



Remedies and Preventives of Disease in Plants. 

 Amongst the various forms of disease in plants, we re- 

 cognize two distinct classes ; one due to the presence 

 of animal parasites, — insects and their larvae, — the 

 other including smut, mildew, blight, rust, and similar 

 fungoid, or vegetable parasitic growths. 



It is not always certain to which of these two classes 

 the trouble belon-^s. Some believe it is an insect 



