BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 77 
1008. Skinner, H. [Face-mites: black-heads.] <Entom. News, 
May, 1897, p. 115. 
Calls attention to the fact that Demodex folliculorum hominis is probably not 
the cause of black-heads in the face. 
1009. Slingerland, M. V. Entomology. <Proc. 42d Ann. Meet. 
West. N. Y. Hortic. Soc. <Trans. N. Y. State Agric. Soc. 
f. 1896 (1897), pp. 588-600. 
Notes on pistol-case bearer, codling moth, peach borer, army worm, insecti¬ 
cides, spraying apparatus, and legislation. 
1010. Slingerland, M. V. Root galls on peach roots. <Rural New 
Yorker, 16 January, 1897, p. 37. 
1011. Slingerland, M. V. When to kill the codling moth. <Rural 
New Yorker, 30 January, 1897, p. 67. 
1012. Slingerland, M. Y. Various washes for fruit trees. <Rural 
New Yorker, 30 January, 1897, p. 69. 
1013. Slingerland, M. V. Sulphate of iron for spraying. <Rural 
New Yorker, 20 February, 1897, p. 115. 
1014. Slingerland, M. V. Some facts about the codling moth. 
<Rural New Yorker, 20 February, 1897, pp. 115-116. 
1015. Slingerland, M. V. The blueberry span-worm ( Diastictis 
incejptaria Walk.) and the bumble flower-beetle (Euphoria 
indct L.). <Can. Entom., Mtvrch, 1S97, pp. 49-52, 1 pi. 
On the life history of the species and the injury of the former to blueberries. 
1016. Slingerland, M. V. Worms in soil—Plum borers. <Rural 
New Yorker, 13 March, 1897, p. 175. 
1017. Slingerland, M. V. Apple trees least susceptible to borer. 
<Rural New Yorker, 3 April, 1897, p. 223. 
1018. Slingerland, M. V. Protection against borers. <Rural New 
Yorker, 3 April, 1897, p. 223. 
Use of various substances. 
1019. Slingerland, M. V. The strawberry leaf roller. <Rural 
New Yorker, 3 April, 1897, p. 223. 
1020. Slingerland, M. V. Plant lice on gooseberries. <Rural New 
Yorker, 10 April, 1897, p. 242. 
1021. Slingerland, M. V. Inoculating trees to kill insects. <Rural 
New Yorker, 10 April, 1897, p. 241. 
1022. Slingerland, M. V. The scurvy bark louse on apple trees. 
<Rural New Yorker, 17 April, 1897, p. 260. 
1023. Slingerland, M. V. Pine tar on apple trees. <Rural New 
Yorker, 17 April, 1897, p. 260. 
1024. Slingerland, M. V. The cost of spraying grapes. <Rural 
New Yorker, 24 April, 1897, p. 277. 
