Archive image from page 81 of Culture methods for invertebrate animals;. Culture methods for invertebrate animals; culturemethodsfo00galt Year: 1959 ( 46 Land and Freshwater Animals the glass tube from breaking when insects are collected on or around solid objects and in crevices; H, silk netting which is stretched over the end of the tube and tied with thread sealed with wax in order to prevent it from fraying; this netting prevents the entrance of dust particles into the tube. 'The end of the rubber tube G is placed near the objects desired, such as small beetles, shells, or any small speci
Archive image from page 81 of Culture methods for invertebrate animals;. Culture methods for invertebrate animals; culturemethodsfo00galt Year: 1959 ( 46 Land and Freshwater Animals the glass tube from breaking when insects are collected on or around solid objects and in crevices; H, silk netting which is stretched over the end of the tube and tied with thread sealed with wax in order to prevent it from fraying; this netting prevents the entrance of dust particles into the tube. 'The end of the rubber tube G is placed near the objects desired, such as small beetles, shells, or any small specimens, which are then drawn into the main chamber through the glass tube D, by the suction which is created by a sharp inhalation at the end of the rubber tube F. 'Specimens in the main chamber may be emptied into a cyanide jar by removing the bottom cork C, which is pushed into the tube for only about one-third of its length.' Fig. 41.— Beamer's aspirator. Courtesy of Ward's Natural Science Establishment, Inc. Another form of aspirator (Fig. 41) employing the same principles was devised by Dr. R. H. Beamer of the University of Kansas. CAGES AND SHELTER In the maintenance of many kinds of aquatic invertebrates a 'rearing raft' may prove to be very useful. A floating raft or platform of appropriate size is anchored in water suitable for the purpose. Sus- pended beneath this platform are cages so located and so constructed that they maintain the contained animals in approximately the con- ditions of the native habitat, and make convenient their examination and observation by the investigator. One of the most generally useful, most easily constructed, and least expensive of cages is the pillow cage (Fig. 42). It is made from a single square of woven wire cloth by doubling and closely folding two opposite edges to form a cylinder, and then in like manner cross-folding the ends. The folds must be crimped tightly and evenly. A square yard of the cloth quartered makes four cages o
Size: 1985px × 1008px
Photo credit: © Bookive / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1950, 1959, archive, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, drawing, galtsoff_paul_simon_1887_, historical, history, illustration, image, invertebrates_collection_and_preservation, invertebrates_cultures_and_culture_media, page, picture, print, reference, update_forthcoming, vintage
