70 THE SAN JOSE SCALE. 
Experiment 25 : 
December 16, emulsion diluted with 2 parts water; January 17, fatal to 50 per 
cent of the scales. Tree afterwards subjected to general treatment given the 
orchard. 
Experiment 40 : 
January 23, same strength as last; March 11, fatal to 75 per cent of the scales; 
on some parts of the tree all the scales were killed; May 4, tree dead, probably 
from effect of scales and borer. Effects of latter were very marked about 
base of tree. The tree was also densely incrusted with scales. 
Experiment 26 : 
December 16, emulsion diluted with 3 parts water ; January 17, fatal to about 
30 per cent of the scales. Tree afterwards subjected to general treatment 
given orchard. 
Experiment 41 : 
January 23, same strength as last; March 11, fatal to 75 per cent of scales; May 
4, tree dead, with the exception of new shoot of last year's growth from near 
base; scales dead on this branch, which was not in very healthy condition, and 
the experiment has therefore little value. 
Experiment 3 : 
October 25, emulsion diluted with 4 parts water; November 17, not very effect- 
ive. Tree afterwards subjected to general treatment given orchard. 
Experiment 4 : 
October 25, emulsion diluted with 6 parts water. Eesult as in preceding experi- 
ment. Tree afterwards subjected to general treatment given orchard. 
Concentrated crystal potash lye. 
Experiment 27 : 
December 16, 2 pounds lye dissolved in a gallon of water ; January 17, fatal to 
85 per cent of scales; March 11, fatality estimated at nearly 80 per cent; May 
4, about 15 j>er cent of scales estimated to be living, the living ones occurring 
somewhat in patches; tree in leaf and fruit, not especially injured, though 
some of the smaller terminals died after blooming ; this and the other trees 
treated with lye present a beautiful, bright, clean appearance, and have a very 
noticeable red color. 
Experiment 28 : 
December 16, 1 pound to the gallon; January 17, fatal to 75 per cent of the 
scales; March 11, no change in condition noted. Tree afterwards subjected to 
general treatment given the orchard. 
Experiment 29 : 
December 16, one-half pound lye to the gallon; January 17, fatal to upward of 
50 per cent of the scales. Tree afterwards subjected to general treatment 
given the orchard. 
Experiment 30: 
December 16, one-fourth pound lye to the gallon; January 17, fatal to 20 per 
cent of the scales. Tree afterwards given general treatment. 
Oreyon wash. 
Experiment 6 : 
November 17, ordinary strength (sulphur 15 pounds, slaked lime 15 pounds, 
bluestone 1^ pounds, water to make 100 gallons) ; December 15, fatal to only a 
small percentage of the scales. Tree afterwards subjected to general treat- 
ment given the orchard. 
Experiment 7 : 
November 17, double strength; December 15, fatal to very small percentage of 
scales; May 4, tree still whitened with wash; larger scales, representing at 
least 50 per cent, alive. 
