CHAPTER VII. 
|. DISEASES, INSECTS AND SPRAYING. 
In 1886, the present author wrote as follows: 
“A remedy proposed of late is to syringe the trees 
with a mixture of Paris green and water, very early 
in the season, while the young apples stand erect. 
The poison lodges in the ‘blossom end’ and de- 
stroys the first brood of worms. Later, when the 
apples turn downward, the poison is washed out hy 
the rains. This remedy was proposed, and its en- 
tire sueceess demonstrated, by Professor A. J. Cook, 
of the Michigan Agricultural College. A tablespoon- 
ful of poison to a gallon of water is sufficient.”* 
This represented very nearly the sum of knowledge 
respecting the spraying of orchards at that time. 
Just ten years later, the writer had a part in put- 
ting before the public a manual on spraying,t which 
made a closely printed book of some four hun- 
dred pages. These contrasts will serve to show how 
rapid has been the evolution of the spraying of 
plants to combat insects and diseases. This sudden 
development of the spraying of orchards has tended 
* Field Notes on Apple Culture,” 88. 
} Lodeman, “Tho Spraying of Plants.” This work should he consulted when 
full information is desired upon the history and practice of spraying. 
(844) 
