Journal of Economic Entomology, Volume 6Entomological Society of America, 1913 |
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Page 7
... usually involves the formulation and statement of results . Of course , in en- tomological investigation the data collected relate primarily to insect life , and in economic entomological investigation the data refer to some phase of ...
... usually involves the formulation and statement of results . Of course , in en- tomological investigation the data collected relate primarily to insect life , and in economic entomological investigation the data refer to some phase of ...
Page 42
... Usually one square foot of radiation is sufficient to heat from 50 100 cubic feet of space . A mill that has sufficient radiation to heat it in winter to a temperature of 70 ° without the heat of the run- ning machinery , can readily be ...
... Usually one square foot of radiation is sufficient to heat from 50 100 cubic feet of space . A mill that has sufficient radiation to heat it in winter to a temperature of 70 ° without the heat of the run- ning machinery , can readily be ...
Page 54
... usually between 10 and 11 o'clock . One trouble that I have found is that it is almost im- possible to maintain a high temperature after 5 or 6 o'clock in the evening owing to the gradual decrease in the temperature outside . This ...
... usually between 10 and 11 o'clock . One trouble that I have found is that it is almost im- possible to maintain a high temperature after 5 or 6 o'clock in the evening owing to the gradual decrease in the temperature outside . This ...
Page 56
... usually , towards the apex of the leaf and makes a feeding scar about as wide as the spread of the mandibles and from 1-16 of an inch to two or more inches in length , depending on the length of time the individual is engaged in feeding ...
... usually , towards the apex of the leaf and makes a feeding scar about as wide as the spread of the mandibles and from 1-16 of an inch to two or more inches in length , depending on the length of time the individual is engaged in feeding ...
Page 62
... blister . These blisters are very conspicuous in the upper sur- faces of the leaves . Oftentimes the whole leaf is mined , but usually with most of the foliage only from one quarter to 62 69 [ Vol . 6 JOURNAL OF ECONOMIC ENTOMOLOGY.
... blister . These blisters are very conspicuous in the upper sur- faces of the leaves . Oftentimes the whole leaf is mined , but usually with most of the foliage only from one quarter to 62 69 [ Vol . 6 JOURNAL OF ECONOMIC ENTOMOLOGY.
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abundant adults Agricultural Experiment Station animals antennæ appears apple Arizona Association attack beetle blood breeding brown-tail bulletin Bureau of Entomology C. L. Marlatt California caterpillars cent Chosica citrus codling moth committee coöperation cotton deposited disease districts economic entomology eggs enemies engorged Federal Horticultural Board feeding female fever field flies food plants forest fruit fly gipsy moth habits Horticultural host humidity hyperparasites important infested injury inspector investigations July known large number larva larvæ Mediterranean fruit fly Microterys monkeys mosquitoes Nitzsch nursery stock nurserymen nymphs observed occur officers orchard oviposition ovipositor paper parasites Pellagra Piura poliomyelitis Porto Rico Postmaster present PRESIDENT W. D. HUNTER probably Prof pupa pupation region season seconds soft scale species specimens spiders spraying stable fly stage Stomoxys straw sugar cane summer temperature ticks tion trees U. S. Bureau unsprayed verruga weevil winter writer
Popular passages
Page 138 - Nursery stock, including all field-grown florists' stock, trees, shrubs, vines, cuttings, grafts, scions, buds, fruit pits and other seeds of fruit and ornamental trees or shrubs, and other plants and plant products for propagation, except field, vegetable, and flower seeds, bedding plants and other herbaceous plants, bulbs, and roots...
Page 501 - If you inquire at your home station, you can ascertain whether certificates and through tickets can be obtained to place of meeting. If not obtainable at your home station, the agent will inform you at what station they can be obtained. You can in such case purchase a local ticket thence, and there purchase through ticket and secure certificate to place of meeting.
Page 501 - If you arrive at the meeting and leave for home again prior to the Special Agent's arrival, or if you arrive at the meeting later than...
Page 138 - ... buds, fruit pits, and other seeds of fruit and ornamental trees or shrubs, and other plants and plant products for propagation (except field, vegetable, and flower seeds) , bedding plants, and other herbaceous plants, bulbs, and roots, may be admitted to the mails only when accompanied...
Page 501 - Be sure that, when purchasing your going ticket, you request a CERTIFICATE. Do not make the mistake of asking for a "receipt.
Page 138 - ... be admitted to the mails only when accompanied with a certificate from a State or Government inspector to the effect that the nursery or premises from which such...
Page 156 - ... of vital activities then obtaining. Conclusions. The use of oils or oil preparations on dormant trees has been followed in several cases by severe injury. Trees, as living organisms, respond to climatic and cultural conditions and as a consequence their power of resisting penetration and injury by oils undoubtedly varies with the season and probably from year to year. Since certain weather conditions promote injury by oils, it appears impossible to be sure that deleterious effects may not follow...
Page 107 - ... virulent form, resulting in death, the other 3 with transient tremblings, partial paralysis, diarrhoea and recovery. It is interesting to note that several of the monkeys had diarrhoea, therein the disease resembles the human disease more closely than when monkeys are simply inoculated with the virus into the brain, for gastro-intestinal upsets in children are frequently associated with infantile paralysis. In these experiments it is important, we think, to use the proper technic in order to...
Page 254 - I do not know that I can add very much to what has already been said with reference to this summer school.
Page 19 - Association by transmitting proper credentials to the Secretary, and by authorizing him to sign their names to this constitution. Other persons engaged in practical work in economic entomology may be elected by a two-thirds vote of the members present at...