Two Common Orchard Mites. 7 
trees showed that the eggs were hatching in abundance, and that 
the adult mites were also abundant. Any spray that will not kill 
the eggs, and which will not adhere to the foliage until eggs hatch, 
is not a practical summer spray for brown mite. If it were possible 
to do a thorough enough job to kill all mites when the spray is ap¬ 
plied and then make a second application later when all the eggs 
are hatched, that would be effective. Owing to the fact that it is 
practically impossible to kill all of both eggs and mites, and that 
the time of hatching of the eggs seems uncertain, the best that could 
be expected of tobacco sprays would be to keep the mites in check 
by repeated applications throughout the season. In the use of sul¬ 
fur the experiments indicate that we have an absolute remedy for 
this pest. 
In experiments Nos. 5 and 6 four small, badly infested cherry 
trees were treated, two sprayed with a compressed air hand pump, 
and two dusted with a bee smoker. It was found that by using a 
small amount of soap in the water 
sulfur would mix nicely, so that 
successfully for applying )the sul¬ 
fur m tfre :dry feT3S^| The best 
time to apply the sulfur in the dry 
form would be in the early morn¬ 
ing, or late in the evening, when 
the dampness would cause it to 
adhere to the foliage. I11 experi¬ 
ment 6, sulfur was applied as a 
dust spray, and enough was used 
so that every leaf received a coat¬ 
ing. An examination of trees 
was made June 7, and to my sur¬ 
prise, not a single adult mite 
could be seen; there were, how¬ 
ever, many of the newly hatched 
ones. An examination of these 
trees again June 9 showed the 
same conditions. On this date a 
very careful examination was 
made of egg masses on check 
and treated trees. The egg 
masses (Fig. 7) are favorite 
places for the mites to moult, and 
along with those that are deposit¬ 
ing eggs there are always many 
to be found there in abundance. 
Twenty-five separate egg masses on sprayed trees were examined 
with a hand lens and not a single adult mite was found. Every 
)0 
applied 
as a liquid 
spray- 
coio. A6fit.erp.sn. 
Figure 7, twig with a large clus¬ 
ter of eggs of Brown Mite. Orig¬ 
inal, Miss M. A. Palmer, delineator. 
