EXPERIMENT STATION REPORT. 625 



following closely interfered with the effectiveness of the com- 

 pound, and, on August 29th, another application was made. 

 This resulted in a brief check, followed in mid-September by a 

 rapid increase which made necessary a spraying, October 14th, 

 with Kill-O-Scale. i part to water 20 parts. October 20th, the 

 foliage had been somewhat scalded; but very few living scales 

 were found. 



November 2d, most of the foliage was off. There was quite 

 a coating of scale in some places, but all of it was oily, and 

 flaked off readily without signs of living insects beneath. Very 

 little live scale was found. The tree has done very well during 

 the season, and the onl\' shoots entirely bare were .'kinned by 

 a brood of Datnna in early September. 



Tree 39 — Trelliscd Apple. October 28th. 1903, "set an 

 imported apple, grown for trellising, which had been in a New 

 Jersey nursery one year, and had become somewhat scaly. It 

 is not a vigorous looking tree, but' seems dwarfed." 



March 9th, gave a thorough drench with the caustic soda' 

 solution, 1^4 pounds in 2 gallons of water. 



Not until May 7th was there a sign of life, and not until 

 June 8th, was there a start from the entire length of the trunk, 

 the lower shoots being well developed before the upper started. 

 June i8th, gave a thorough spraying with caustic soda, i pound 

 in four gallons of water, to test the effect on the foliage. June 

 19th, the leaves were brown and dry around the edges, and 

 the injury increased until, June 28th, the entire foliage looked 

 scalded. At that time scale breeding had begun, but the infes- 

 tation was slight, at worst. There was a slow increase through- 

 out the summer, and, October 14th, was bad enough to receive 

 an application of Kill-O-Scale, i part tO' water 20 parts. This 

 did not improve the foliage, though it wiped out most of the 

 scales. November 2d, the tree w^as still alive, and that was all 

 that could be reasonably said for it ; was, therefore, taken out 

 about the middle of the month. 



Tree 40 — Lincoln Cor el ess Pear. Leaf buds were pointing 

 oiut all 0'\'er the tree April 26th, and by May 7th was in full 

 leaf. No fruit buds or blossoms. May 27th, the tree was 

 growing as usual, but iri some places showed the eft"ect of scale 

 injurv. The tree apparently throws off the scale e\'ery season, 

 and there was little, indeed, then present ; but the bark had been 

 burt in vitality, and quite a numher of shoots were rough and 

 broke easilv.. 



