A Manual of Experiments in Elementary Science: Teacher's Edition (1918)
Curtis, Francis D. · Charles E. Merrill Company · leaf 223
ll of water and invert them full in the pan of water. Select some one from the class as a “ test.” Request him first to exhale all the air he can and then to inhale as much as possible and immediately to take the glass tube in his mouth and blow the air out under the edge of one of the inverted… … Fig. 110 (T). the first jar for the second test. After a minute or so, during which time the student has resumed normal breathing, let him exhale into the jar only as much air as he normally expires. Meanwhile, let another student measure the number of c. c. remaining in the second jar, by first…
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Internet Archive · National Library of Education · Public domain (published before 1931). Free to use for anything.
