advautiigo of being readily seen on the leaves, so that one can tell at 

 a glance which have and which liave not been sprayed, which is often 

 of great convenience. 



Another advantage is that it is lighter than Paris green, and does 

 not settle so quickly, and as a result can be distributed more evenly 

 over the foliage. Still another advantage is that it can be used in 

 large proportions, if necessary even up to 25 pounds to 150 gallons 

 of water without injury to the foliage. Many fruit-growers dislike 

 Paris green on account of its injuring the foliage. This is undoubt- 

 edly because they use too lai-ge a proportion, or else because they do 

 not keep it properly stirred all the time they are using it. If they 

 should use arsenate of lead, no such trouble would arise; but to 

 secure an even distribution, this also should be kept constantly 

 stirred. 



ORIENTAL FERTILIZER AND INSECT DESTROYER. 



This insecticide is manufactured and sold by Bigelow & Co. of 

 Chicago, at 75 cents a gallon. The analysis of this substance, made 

 for me by Dr. Lindsey of the State Experiment Station, indicates 

 that it is composed of arsenate of soda, chloride of potash, nitrate of 

 soda, and some caustic soda in solution in water. 



A long series of experiments was carried on with this substance 

 on the tent caterpillar, Colorado potato beetle, and rose beetle, but it 

 proved unsatisfactory as it injured the foliage very badly when used 

 in the proportion recommended by the manufacturer, and when used 

 in smaller proportions it did not destroy the insects. 



ARSENATE OF SODA. 



This substance has been recommended by various parties as an 

 insecticide, and it was tested with the following results : 



June 2. Sprayed a branch of an apple tree with arsenate of soda 

 in water in the proportion of 3 lb. to 150 gal., and sleeved in ten 



