. Civic biology; textbook of problems, local and national, that can be solved only by civic coöperation. Biology. EQUIPMENT, APPARATUS, AM) LH'.KAKV 13 Glass. Doublo-tliifk window glass lor sides and ends, and rilibed skylight glass fur bottom for sizes al)ove 20 x 10 x 12 inches. For smaller sizes, waste 10 x 12 in. negatives arc good and cost little or nothing. Angle or valley tin, sizes indicated Im-Iow. Aiiuarinm cement. Solder. (ireen or l>lack carriage paint and a little .spar Fig. (i. Making aciuaria From left to right, laying the cement; glass set in ..lie. with .
. Civic biology; textbook of problems, local and national, that can be solved only by civic coöperation. Biology. EQUIPMENT, APPARATUS, AM) LH'.KAKV 13 Glass. Doublo-tliifk window glass lor sides and ends, and rilibed skylight glass fur bottom for sizes al)ove 20 x 10 x 12 inches. For smaller sizes, waste 10 x 12 in. negatives arc good and cost little or nothing. Angle or valley tin, sizes indicated Im-Iow. Aiiuarinm cement. Solder. (ireen or l>lack carriage paint and a little .spar Fig. (i. Making aciuaria From left to right, laying the cement; glass set in ..lie. with .^reeu twigs to liold it in place; painting frames, and frames ef different sizes, 5x7x4 to 24x15x10; cutting the angle tin to measure: solderini; tlie frame hel-l in a square to table Tools. Every laboratory should !â¢.â provide.! with a few simple , among which the following will V)e reipiired in making atpiaria : Carpenter's sqnare,âto hold the frame perfectly scpiare at each angle while it is being soldered. .V three-way S(inare, by miiling two 5-inch boards of convenient length at exact right angles ^ten- ing them to a work table, greatly facilitates getting each angle right at the first 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 Hodge, Clifton Fremont, 1859-; Dawson, Jean, 1873-. Boston, Ginn
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