PLATE I. 
Te 
he 
Vie 
XVI. 
XVII. 
PE USSR ACROSS. 
PLATES. 
Fig. 1.—Cover crop of vetch in vineyard of Mr. John Higgins, North 
East, Pa. Fig. 2.—Cover crop of turnips in vineyard of Mottier 
Bros., North East, Pa.; vineyard badly infested by grape leafhop- 
per, which was effectively treated with blackleaf tobacco-extract 
Fig. 1.—Injury by grape leafhopper ( Typhlocyba comes) to unsprayed 
vines. Fig. 2.—Perfect foliage of sprayed vines. Views from ex- 
perimental plats in vineyard of Mr. H. H. Harper, at North East, 
General view of the Whitman pear orchard, with power-spraying 
outfit in operation in spraying experiments against codling moth, 
Concord Cal talg Oona 5. 2 Ge ND ee Ae. Le pees st are rere ee 
. Injury by rose-chafer (Macrodactylus subspinosus) to fruit on un- 
sprayed grapevine in the vineyard of Mr. ©. F. Hirt, at North 
. The protection afforded by spraying; vine from row wens the 
luspraved vine shown im Plate UViis foo. seen eect nce ee te 
. Injury by rose-chafer to fruit on unsprayed grapevine in the vine- 
Vara or Nir, Georze Cook, at Norn Fast, Pas.cs..- 22-2 eens =e 
Protection afforded by spraying; vine from vineyard of Prospect 
Park Fruit Farms Co., adjoining vineyard of Mr. George Cook, 
INORG Mas tee terete ee acts. an eye pte ree ae Se oo 5 en 
. The California peach borer (Sanninoidea opalescens). Apricot 
orchard, showing trees injured and killed by the borer...-..--.--- 
. The California peach borer. Rearing cages in laboratory yard at 
San Jose, Cal., used in study of its life history..:..........------- 
. The California peach borer. Fig. 1.—Base of apricot tree, show- 
ing injury by larve. Fig. 2.—Wire cage, used in determining 
period of emergence of moths, in place around tree.........-.----- 
. Peach leaves showing work of peach and plum slug (Caliroa [Erio- 
COT OULES| ROTI QOLULIUO) eee aes ea Ne ee 
. Injury about two weeks old to peach shoots by the peach bud mite 
(LRA OWARUS (ICT eS at te AOR O a oe OC ease ceeee 
. Injury several weeks old to peach shoots by the peach bud mite... . 
. Showing condition of peach nursery trees in the fall, due to injury 
Picsnienmedich! Wid ama tL eese ne ein. Uae cee wee ects ce ee aera cs So 
. Showing condition of peach nursery trees in the fall, due to injury 
| OVP HLS) OV aE EI ate) oui Feiner toed deg tak lee Rial el A a RR 
Injury to buds supposedly due to the peach jnuumitencs eee ote 
Grape canes showing infestation by the grape scale, Aspidiotus 
Sa ERO NGI OTD) MITE Gon oe en, OEE, Ma a 
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