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every tree of tliese 4 acres is infested with San Jose scale, some of the 

 youngest being very thickly infested. The place was in charge of a 

 tenant, and accurate information as to the purchase of the several lots 

 of trees was not obtained by Mr. Coquillett. The advice given was to 

 dig up and burn all the trees on the ten acres and to spray the remainder 

 three times at intervals of ten days with dilute kerosene emulsion as 

 used at Riverside. The owner of the orchard has promised me in cor- 

 respondence to carry out this plan. The oldest peach trees have nev^er 

 been productive, and many of, them have already died, while the bal- 

 ance have suffered so severely from the attacks of the scale that it 

 seems doubtful whether they will ever recover, even if rid of the pest. 

 Careful examinations were made in the surrounding yards and orchards 

 by Mr. Coquillett, but the scale was found to be confined to this one 

 orchard. I visited this orchard on the 28th of July and found matters 

 exactly as represented by Mr. Coquillett. In this orchard the origi- 

 nally infested trees do not seem to have come from either of the two 

 Xew Jersey firms, who are, with little doubt, responsible for all the 

 other cases mentioned, excepting, possibly, the Florida one; but it is 

 interesting to note that the first affected trees introduced, as I am 

 informed by the owner, are supposed to have been received from a 

 Missouri nurseryman. 



In the third infested locality in Maryland, namely, Chestertowu, 

 Kent County, comparatively few trees are affected. It was discovered 

 in this orchard by Mr. Marlatt, whom I had sent to investigate the 

 pear-tree Pvsylla. He tells me that the owner of the orchard, in 1890, 

 purchased between 200 and 300 trees from a New Jersey nurseryman. 

 They were ijoor trees, considered by the dealer as the best of his sec- 

 ond-rate trees. They were planted after pruning, and about half of 

 them died before spring. The dead ones were replaced by trees in 

 excellent condition, i)urchased from Ellwanger & Barry, of Eochester, 

 N. Y. Across the road he put in later a younger orchard, also from 

 Ellwanger & Barry. At the present time about half a dozen of the trees 

 in this younger orchard are affected. The year following the planting 

 of the New Jersey trees the owner had an emyloye go over the ones 

 most affected with a thick whale-oil soap of the consistency of molasses. 

 This treatment was perfectly effectual. Mr. Marlatt examined one 

 of these trees and found it perfectly clean nearly three years after 

 treatment, although standing in the middle of the affected orchard. 

 Upon certain of these older trees, curiously enough, the scale seems 

 dying out. The trees themselves are in an enfeebled condition, but 

 have i)ut out some new growth, and npon this new growth there are no 

 scales, while the great majority of the old scales on the older growth 

 are dead. The original specimens, which he brought from this orchard, 

 contained no living scales. The owner of the orchard is rather preju- 

 diced in favor his whale-oil soap treatment, and promises next fall to 

 treat most carefully every affected tree. The probabilities are strong, 



