. Culture methods for invertebrate animals;. Invertebrates -- Cultures and culture media; Invertebrates -- Collection and preservation. Fig. 2.—The pile scrape net. For picking up small specimens floating on the water a small dip net about 6 inches in diameter is sometimes preferable. The pile scrape net. This modification of the dip net is used for col- lecting organisms growing on piling and other underwater structures. The metal ring of the net is bent in such a way as to make it fit the curva- ture of the piling (Fig. 2); it is about %6 °f an mcn m thickness and 12 K-,— Ut -- It^t. Fig. 3.
. Culture methods for invertebrate animals;. Invertebrates -- Cultures and culture media; Invertebrates -- Collection and preservation. Fig. 2.—The pile scrape net. For picking up small specimens floating on the water a small dip net about 6 inches in diameter is sometimes preferable. The pile scrape net. This modification of the dip net is used for col- lecting organisms growing on piling and other underwater structures. The metal ring of the net is bent in such a way as to make it fit the curva- ture of the piling (Fig. 2); it is about %6 °f an mcn m thickness and 12 K-,— Ut -- It^t. Fig. 3.—The square scrape net. inches in diameter with the curved scraper 1 inch in width. Attached to this frame is a net 18 inches in depth with the mesh % of an inch at the top and % of an inch or less at the bottom. The metal blade which is welded to the lower part of the iron frame works as a cutting knife when the net is pressed against the piling and is pulled up. The length of the handle varies according to local conditions from 6 to 20 feet. The square scrape net. This type is a modification of the pile scrape net from which it differs only in the shape of the frame, which is not bent (Fig. 3) as it is in the former type, and is provided with a straight cutting blade attached to the base. This net is very useful in collecting organisms growing on walls of various underwater structures such as. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Galtsoff, Paul Simon, 1887-. update forthcoming
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
