16 
from Mr. Howard, referred to above. Two of the trees were 5 feet 
tall by 4 in diameter, while the others ranged from 14 to 18 feet tall 
by from 12 to 16 feet in diameter. They were sprayed between the 
hours of 3 and 5.30 p. m.; sun shining, light. breeze. Three hundred 
gallons of the diluted compound were used. A tree 16 feet tall by 14 
feet-in diameter required about 14 gallons of the compound, and three 
men and a spraying outfit will spray about 800 gallons in aday. The 
cost of materials and labor in spraying with this compound a tree of 
the size indicated above amounts to about 24 cents per tree. I exam- 
ined the above-mentioned trees September 24, and again October 
19, and found that the leaves and fruit were uninjured, but a few of 
the oranges had small brown spots on them as deseribed above in ex- 
periment 199.. Nearly all of the scales located on the leaves and bark 
were dead, but about one-fourth of those located upon the fruit were 
still alive. : 
(193, 196) Resin 28 pounds, fish oil 4 pints, caustic soda 8 pounds, 
water to make 100 gallons; costs $1.10. Sprayed on two orange trees 
at 1.15 and 12.20 p. m., July 19 and August 7; sun shining in the 
first, cloudy in the second, light breeze. August 6, September 2, 
and October 19, leaves uninjured; some of the oranges had brown 
spots on them as described above in experiment 199; found only one 
live scale on the leaves, and three on the fruit. 
(202) Resin 21 pounds, fish oil 3 pints, crude potash 4 pounds, water 
to make 100 gallons; costs 85 cents. Sprayed on an orange tree at 
12.30 p. m., August 8; sun shining, light breeze. September 2, 
leaves uninjured; some of the oranges had brown spots on them as de- 
scribed above in experiment 199; found many live scales both on the 
leaves and fruit. 
(203) Resin 28 pounds, fish oil 4 pints, potash 53 pounds, water to 
make 100 gallons; costs $1.15. Sprayed on an orange tree at 1p. m., 
August 8; sun shining, light breeze. September 2, same as in the 
preceding experiment. 
(183) Resin 20 pounds, tallow 64 pounds, caustic soda 63 pounds, 
water to make 100 gallons; costs 98 cents. Sprayed on a lemon tree 
at 12 m., July 17; sun shining, light breeze. August 6, a few of the 
older leaves were injured ; found great many live red scales. 
(184) Resin 25 pounds, tallow 8 pounds, caustic soda 8 pounds, water 
to make 100 gallons; costs $1.22. Sprayed on an orange tree at 12.30 
p.m, July 17; sun shining, light breeze. August 6, leaves uninjured ; 
found three live red scales. 
(188) Resin 17 pounds, tallow 6 pounds, caustic soda 6 pounds, water 
to make 100 gallons; costs 88 cents. Sprayed on an orange tree at 1 - 
p. m., July 18; sun shining, light breeze. August 6, leaves and newest 
growth uninjured ; found twelve live red scales. 
(189) Resin 22 pounds, tallow 8 pounds, caustic soda 8 pounds, water 
to make 100 gallons; costs $1.16. Sprayed on a lemon tree at 1.15 
