Howe, Herbert A. (Herbert Alonzo), 1858-1926 · Meadville, Penna., Flood and Vincent · leaf 169
er end fastened in itsgroove ; if it be not pulled with sufficient force, it willbe baggy and useless. If pulled a trifle too hard, all isover in an instant, and the cocoon is explored for a newweb. One more instrument demands attention. It is thewonder-working spectroscope, with which… … Fig. ■Essentials of a Spectroscope. Constructionof the spectro-scope. is split up in passing through the raindrops, and a rain-bow is produced. Many an old lamp, once the gloryof grandfathers parlor, is surrounded by prismaticpieces of glass, which are rich with varied hues, as thelight shines…
Astronomy
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