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Excerpt from Entomological News, 1933, Vol. 44 A bunsen suction pump was used to draw the air through the Olfactometer. It was connected with the small vertical out let Ou the stern. The air for one Of the intake tubes on the arms of the Y was bubbled through a flask of water, then led through the Odoriferous substance to be tested. The air for the other intake tube was only bubbled through the water. The intake tubes Of the Olfactometer were plugged with cotton, which served both as a filter against droplets or dust of the substance being tested and as a barrier against the occasional earwig which might attempt to ascend the tube. The outlet tube was similarly plugged. Stoppers were put in the ends of the Y when the apparatus was being used. In a preliminary experiment, when no Odoriferous substances were being tested, earwigs had shown a tendency to go into the arm Of the Olfactometer in which air was moving the more rapidly. Therefore, in the experiment proper, every effort was made to equalize the currents of air in the two intake arms. All resistances to the air currents, such as the bends in the tubing and the depth Of water in the flasks, on the two sides were balanced as closely as possible, in setting up the apparatus. Then pinch-cocks were used to help in the equalization. To further approach equality between the two currents, and to ensure a nearly constant rate of flow, the currents were each run through five feet of glass tubing, one millimeter inside diameter. The rate at which air was passing through each side Of the intake systems was judged by the number of bubbles per minute in the flask Of water on each side. A liter of air was drawn through the system in two minutes. In order to eliminate the influence Of bias between the arms on comparative readings between the two intake systems, the latter were changed over from one arm to the other after every two readings. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, Vol. 31: April, 1920 Wan complaints regarding non receipt of issues of the\ e\\s should be pre sented within three months from date of mailing of the Issue. After that time the numbers will be furnished only at the regular rate for single copies. Not more than two issues will be replaced gratis through loss, in transit or in change of address, unless such have been registered, at the subscriber's ex pense. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, 1941, Vol. 52 Manuscripts and advertisements should be sent to the editor, Dr. P. P. Calvert, P. O. Box 14, Cheyney, Pennsylvania. The receipt Of all papers will be acknowledged and, if accepted they will be published as soon as possible. If not accepted, authors will be so advised and postage requested for return Of manuscripts. Articles longer than six printed pages will be published in two or more installments, unless the author is willing to pay for the cost Of a sufficient number Of additional pages in any one issue to enable such an article to appear without division. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, 1937, Vol. 48 In the past two years, while studying soil populations, the question has often come to mind, What becomes of all of the millions of insects that live on the soil surface and what are their chances of preservation P Obviously, the answer is, They all die and disintegrate and the chances of preservation are very small. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, 1939, Vol. 50 TO contributors. The receipt of all papers will be acknowledged and if they are accepted they will be published as soon as possible. It not accepted, authors will be so advised and postage requested for return of manuscripts. Articles longer than six printed pages will be published in two or more installments, unless the author is willing to pay for the cost of a sufficient number of additional pages in any one issue to enable such an article to appear without division. Proof will be sent to authors. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, 1930, Vol. 41 Head: width mm., vertex 42 mm. Antennae: segment I, length 98 mm.; II, mm.; III, mm.; IV, mm. Pronotum: length mm., width at base'2.25 mm. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, Vol. 27: March, 1916 Advertising Rates: Per inch, full width of page, single insertion, a dis count oi ten per cent. On insertions of five months or over. No advertise ment taken for less than $r.oo - Cash in advance. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, Vol. 25: April, 1914 On January io, 1914, Milwaukee's circle of nature students lost one of its most prominent members through death. Latent heart trouble, with an attack of angina pectoris as the immediate factor, ended the life of Dr. George Williams Peckham, patriot, educator, scholar and scientist. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, 1935, Vol. 46 We both' loved collecting [dragonflies] and he took a Sincere interest in my work. A maternal uncle, William Ashbrook Kellerman (1850 was Professor Of Botany at the Ohio State University, at Columbus, from 1891 to 1908. Bruce's mother died at Bluffton, October 8, 1928. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Excerpt from Entomological News, Vol. 31: October 1920 W All complaints regarding non-receipt of issues of the news sh sented within three months from date of mailing of time the numbers will be furnished only at the regular Not more than two issues will be replaced gratis thro in Change of address, pense. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.