d in general color, being either yellow, brown, grayish, or olivaceous, and some specimens much resembling certain forms of our Polyphe- mus. According to the testimony of those who have had most experience with this species in Europe, coition invariably takes place at night, and lasts but a… … effects of ordinary gas on vegetation. Gas was conducted on all kinds of oak, but prefers those of the white oak group. through pipes to the roots of various trees continuously for several months. The principal conclusion arrived at was that 25 cubic feet of gas, daily diffused through 576 cubic…
Internet Archive · Public domain (published before 1931). Free to use for anything.
