CHAPTER VII. 



DISEASES, INSECTS A XI) SPEATING. 



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 by 

 the rains. This remedy was proposed, and its en- 

 tire success 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. 



tLodeman, "The Spraying of Plants." This work should be consulted when 

 full information is desired upon the history and practice of spraying. 



(844) 



