130 NEW YORK STATE MUSEUM 
331-43 in the above named young apple orchard and under con- 
ditions previously described. The condition of these trees so 
far as noted at the time of treatment, Dec. 11, 1901, was as fol- 
lows. Trees 317, 320, 321, 322, 328, 324, 325, 326, 327, 333, 334, 
335, 336, 338, 340, 341 and 342 were extremely badly infested with 
the scale; trees 319, 330, 332 and 343 were very badly infested, 
and trees 316 and 331 were rather badly infested; there were 
only a few on tree 339 while trees 315, 318, 328 and 337 were 
dead. 34 other fruit trees on an adjoining place were also 
sprayed with this solution, except that a little of Good’s tobacco 
whale oil soap no. 6, 2 pounds to the gallon, remained in the barrel 
when the solution of no. 3 was added. ‘There was however very 
little of the tobacco whale oil soap solution, and the effect would 
hardly be modified. 
The examination of the above mentioned trees Mar. 10, 1902, 
showed that apparently all of the scale insects had been killed 
by the treatment, and so far as noted no injury to the trees 
occurred. The same was true of a later examination made May 6, 
and there was no material change in conditions so far as noted 
June 12. An examination of the appletrees Nov. 11, 1902, by 
my assistant, Mr Walker, showed that a few of the trees were 
very badly infested, some badly infested and others in good 
condition. The application appears to have checked the pest 
very thoroughly till toward the latter end of the season, when 
the few which survived the treatment were able to multiply 
and reinfest the trees to a considerable extent. 
Good’s tobacco whale oil soap no. 6. This compound was used 
in a solution of 2 pounds to the gallon and was applied to 11 
small appletrees in the above described orchard and to nearly 20 
greengage plumtrees on the northern boundary of the same. 
The condition of the appletrees at the time of spraying was as 
follows. Trees numbered 303, 307, 308 and 312 were very very 
badly infested. Trees 305, 310 and 314 were dead except in the 
case of 310, which had developed a few suckers; 311 was nearly 
dead. There were a few scales to be seen on trees 304, 306 and 
312, and 309 and 311 were very badly infested. 
An examination of these trees Mar. 10 showed that apparently 
every scale insect had been destroyed by the application, and 
the same was true of a later examination May 6. This condi- 
