REPORT OF THE STATE ENTOMOLOGIST I9OO 977 



no. 8, which was treated with 20% mechanical kerosene emulsion. 

 The effects of crude petroleum on tree loi are well shown on pi. 10. 

 Several limbs on tree 114 have few or no leaves {see pi. 10). 



Aug. 3. Tree 93 is nearly dead. Dried leaves are hanging from the 

 limbs, though the bark on the trunk is green up to about four feet from 

 the ground. A sprout is starting from the base of the tree, and S c o 1 y t u s 

 rugulosus beetles are attackmg it. Tree loi is developing many 

 suckers and a number of the old limbs are dead. Very few or no living 

 young scale insects can be found on the young wood. There are few or 

 no young scales on tree 114. 



Sep. 7. Tree 93 is dead. Few or no young scales can be found on 

 tree loi. Several limbs are dead. There are a few living young scales 

 on tree iiz|. 



Oct. 25. The conditions are nearly the same as on Sep. 7. 



The above is a ghastly record for a substance which has been pro- 

 nounced " harmless to the most tender varieties and on the youngest 

 trees." It was therefore with great pleasure that I availed myself of the 

 opportunity to watch the outcome of several experiments tried by L. L. 

 Morrell, of Kinderhook (N. Y.). Crude petroleum was painted on the 

 trunks of some of the young trees, top-worked with Sutton beauty 

 apples, and later, Ap., the tops of the trees were sprayed with a 25% 

 mechanical emulsion of crude petroleum. Many of the lateral buds in 

 these trees were dead May 21 and the foliage looked sickly. Since then 

 portions of some of the trees have died. Their injury was in all prob- 

 ability caused by the liberal amount of oil put on with the brush. June 

 20 Mr Morrell reported that the tops of some of these trees had com- 

 menced to die, and that a number of them looked sickly. The results of 

 painting a tree-top worked with Sutton beauty with crude petroleum 

 about the middle of February is well shown on pi. 11, which was taken* 

 May 21. The foliage was very thin, and the leaves were small and 

 unhealthy. June 2, with few exceptions, they looked well, as stated by 

 Mr Morrell. 



The most disastrous results were seen in the king trees painted with 

 crude petroleum Dec. i, 1899. One was photographed May 21 (pi. ii) 

 and was then nearly dead. June 20 the trees so treated were dead 

 to all appearances. 



Experiments with whale oil soaps against San Jose scale. 



Two makes of this insecticide were experimented with and the results 

 compared. One was Good's caustic potash whale oil soap no. 3, and 



