The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 1-5 of 70
Page 9
... covering membrane is hyaline and transparent . Although very thin and delicate it is sufficiently strong so that the egg may be safely lifted and moved by the aid of a fine brush . The egg always lies free within the stem of the host ...
... covering membrane is hyaline and transparent . Although very thin and delicate it is sufficiently strong so that the egg may be safely lifted and moved by the aid of a fine brush . The egg always lies free within the stem of the host ...
Page 27
... covered when it was found that the leafhoppers were swarm- ing on the native Atriplex in Pendleton , Oregon , and even worse at Pasco and North Yakima , Washington , extending up the Co- lumbia at least to Wenatchee . This gave a new ...
... covered when it was found that the leafhoppers were swarm- ing on the native Atriplex in Pendleton , Oregon , and even worse at Pasco and North Yakima , Washington , extending up the Co- lumbia at least to Wenatchee . This gave a new ...
Page 30
... covered with fog when the valley is free . A similar condition was found west of Tremon- ton in 1905 and the local trouble at Garland in 1908 ( Shaw , 1910 ) may have been of this type . Taken all in all , the theory of periodic flights ...
... covered with fog when the valley is free . A similar condition was found west of Tremon- ton in 1905 and the local trouble at Garland in 1908 ( Shaw , 1910 ) may have been of this type . Taken all in all , the theory of periodic flights ...
Page 42
... . 2. A field that at one time almost covered the ground , now curling up and beginning to " go back . " ( This field was plowed up later . ) disease in that region . The latter assumption is hardly. 42 BULLETIN NO . 155.
... . 2. A field that at one time almost covered the ground , now curling up and beginning to " go back . " ( This field was plowed up later . ) disease in that region . The latter assumption is hardly. 42 BULLETIN NO . 155.
Page 52
... covered that it was caused by the punctures of E. tennela , worked out the insect's life history , and confirmed the trans- mission of the disease by cage experiments . Titus found that one leafhopper would cause the disease on a young ...
... covered that it was caused by the punctures of E. tennela , worked out the insect's life history , and confirmed the trans- mission of the disease by cage experiments . Titus found that one leafhopper would cause the disease on a young ...
Common terms and phrases
abdominal segment abundant adults alfalfa weevil Allorhina nitida antennae appear apple Arzama Arzama obliqua attack August average bean beet borers burrow cage Calendra cat-tail cent Cephus Cephus cinctus climatic color Cotinis crop curly-leaf dark brown decora deposited disease dorsal early eggs elytra emerged entered soil Entomology experiments feeding female field fig moth figs flowers foliage food plants Galerucella grass ground grubs habits hatched head hibernation hopperburn inches infested injury insect instar Japanese beetle July July 25 killed large number larvæ leaf leafhopper leaves legs length Mesothoracic metathorax molted nymphs oblonga observed occur orchard oviposition parasites period pest Plate potato prepupae prothorax pupa pupal pupation rainfall region rhizome season seeds serghi setae showing Smyrna species specimens spiracles spray spring stage stem sterilized surface temperature third instar thorax trees tubercles Typha latifolia Utah ventral width wings winter writer yellow
Popular passages
Page 4 - If it consists in whole or in part of a filthy, decomposed, or putrid animal or vegetable substance, or any portion of an animal unfit for food, whether manufactured or not, or if it is the product of a diseased animal, or one that has died otherwise than by slaughter. Sec. 8. That the term
Page 9 - ... determine whether or not it is safe and profitable to add 20 per cent more of the lime-sulphur concentrate to a given amount of water, thus increasing the strength of the summer spray to that extent. In 1913 a proprietary spraying material in powder form, known under the trade name of "Soluble Sulphur," was used at the rate of 2 pounds to 50 gallons of water in combination with one pound of dry arsenate of lead. While this material appeared to be quite effective in scab control that season very...
Page 61 - In order that the ecological relationships of the insect fauna of the cat-tail plant may be better understood, the first part of this paper deals with the ecology of the cat-tail plant. In the second part, the life history and biology of the insect inhabitants of the plant are discussed. This part of the paper has been treated from a systematic point of view, considering the insects under their respective orders, rather than grouping them according to their life habits. In the resume", composing...
Page 16 - FH CHITTENDEN, in charge of truck crop and stored product insect investigations. AD HOPKINS, in charge of forest insect investigations. WD HUNTER, in charge of southern field crop insect investigations. FM WEBSTER, in charge of cereal and forage insect investigations. AL QUAINTANCE, in charge of deciduous fruit insect investigations. EF PHILLIPS, in charge nf bee culture.
Page 23 - Sc. D., In Charge of Truck Crop and Stored Product Insect Investigations.