The Shipley Collection of Scientific Papers, Volume 2381920 |
From inside the book
Results 1-5 of 74
Page 15
... emergence of the adult . Even the presence of half a score of parasitic larvæ often fails to wreck the deli- cate structure during the winter . The longevity of the sawfly larvæ is remarkable and is worthy of mention . September 8 ...
... emergence of the adult . Even the presence of half a score of parasitic larvæ often fails to wreck the deli- cate structure during the winter . The longevity of the sawfly larvæ is remarkable and is worthy of mention . September 8 ...
Page 19
... emergence tubes or other limited places the males develop savage instincts and attack each other without mercy , using their jaws freely to snip off the antennæ , and , in some cases , the legs of their rivals . Singularly , very few of ...
... emergence tubes or other limited places the males develop savage instincts and attack each other without mercy , using their jaws freely to snip off the antennæ , and , in some cases , the legs of their rivals . Singularly , very few of ...
Page 21
... emerged . A green stem of Elymus was planted in a tumbler of wet sand and the camera focussed on this stem about midway . After a few trials I discovered that this stem must be short and headless . The females were taken from the cage ...
... emerged . A green stem of Elymus was planted in a tumbler of wet sand and the camera focussed on this stem about midway . After a few trials I discovered that this stem must be short and headless . The females were taken from the cage ...
Page 25
... emerged . Under 4 inches 1 larva died , all others emerged . Under 6 inches 1 adult died in the cell , 6 larvæ also died , 2 active living larvæ still in the cell , all other adults emerged . Under 6 inches 7 larvæ died in the cell ...
... emerged . Under 4 inches 1 larva died , all others emerged . Under 6 inches 1 adult died in the cell , 6 larvæ also died , 2 active living larvæ still in the cell , all other adults emerged . Under 6 inches 7 larvæ died in the cell ...
Page 14
... emergence of beetle of roundheaded apple - tree borer at French Creek , W. Va . Date egg was deposited . Date beetles issued from wood . Number of beetles . Number of days from egg June 18 , 1913 .. Do .. Do. June 15 , 1914 . June 18 ...
... emergence of beetle of roundheaded apple - tree borer at French Creek , W. Va . Date egg was deposited . Date beetles issued from wood . Number of beetles . Number of days from egg June 18 , 1913 .. Do .. Do. June 15 , 1914 . June 18 ...
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.