15 
drum of 800 pounds; of fish-oii, by the barrel of 50 gallons; of potash, 
by the cask of 700 pounds; and of tallow, by the barrel of 375 pounds. 
(181) Resin, 25 pounds; caustic soda, 3 pounds; water to make 100 
gallons; costs 65 cents. The diluted solution was of a light brown color. 
Sprayed on an orange tree at 11.30 a. m., July 17, sun shining, light 
breeze. August 6, foliage uninjured; found a great many live scales. 
(182) Resin, 33 pounds; caustic soda, 4 pounds; water to make 100 
gallons; costs 84 cents. Sprayed on an orange tree at 11.45 a. m., July 
17, sun shining, light breeze. August 6, foliage uninjured; found great 
many live scales. 
(199, 200) Resin, 25 pounds; caustic soda, 6 pounds; water to make 
100 gallons; costs 77 cents. Sprayed on two orange trees at 10.45 and 
and 11 a. m., August 7, sun shining, light breeze. September 2, found 
great many live scales, especially on the fruit; leaves uninjured; many 
of the half-grown oranges have rusty, brownish spots on their under 
sides, or where they came in contact with each other or with a branch 
or other object. These spots were still present October 19, but whether 
they will disappear or not before the fruit ripens remains to be seen. 
(201) Resin, 33 pounds; caustic soda, 8 pounds; water to make 100 
gallons; costs $1. Sprayed on an orange tree at 11.15 a. m., August 
7, sun shining, light breeze. September 2, same as in the preceding 
experiment. 
(190) Resin 16 pounds, fish-oil 6 pints, caustic soda 6 pounds, water 
to make 100 gallons, costs 85 cents. The diluted solution was of a very 
dark brown color. Sprayed on a lemon and orange tree (7. €. orange 
budded to lemon, but the orange branches not cut away) at 1:30 p. m., 
July 18, sun shining, light breeze. August 6, leaves and newest growth 
uninjured; found ten live scales. 
(191) Resin 22 pounds, fish oil 1 gallon, caustic soda 8 pounds, water 
to make 100 gallons; costs $1.15. Sprayed on an orange tree at 2 p. m., 
July 18, sun shining, light breeze. August 6, a few of the older leaves 
have brownish spots on their under sides; found three live scales. 
(192,195) Resin 20 pounds, fish oil 3 pints, caustic soda 6 pounds, 
water to make 100 gallons ; costs 80 cents. Sprayed on a lemon and 
on an orange tree at 1 and at 12:10 p. m., July 19, and August 7; sun 
shining in the first, cloudy in the second experiment, light breeze. 
August 6, in first experiment leaves uninjured; found two live scales. 
September 2, in second experiment leaves uninjured; found 12 live 
scales on the fruit and 8 on under side of the leaves where they had 
evidently escaped the spray. In both experiments the fruit was as 
described in experiment 199 above, but to a less degree. 
The formula in these two experiments was the same, except that in 
192 one pound more of the resin was used than in 195; but this small 
quantity in 100 gallons could scarcely have affected the results. This 
is the same formula used on September 3 of the present year (1889) 
for spraying twenty-five orange trees, in accordance with instructions 
