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Scientific American, Vol. 59, No. 19 (1888) (1888)
leaf 4
oth and held in place face of the casing, the spring acting to normally main- edge, whereby the mainstay wires may be drawn or upon the cork by means of a small rubber band. One tain an inwardly projecting stud or pin of the dog in strained up tightly, in the manner indicated by the of the frog’s… … ready engagement and disengagement of the operating of 281 deg. 30 min.—a new element to be considered in Fig. 2—KENT’S TROUGH FOR SHOWING THE CIRCULA- I lever and ratcheted lifting lear. the arguments for and against circular pipe sewers. TION OF BLOOD IN A FISH'S TAIL. © 1888 SCIENTIFIC AMERICAN,…Internet Archive · Public domain (published before 1931). Free to use for anything.
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