State Microscopical Society of Illinois · Chicago, Ill. : State Microscopical Society of Illinois · leaf 166
ng surface, and the angle with which a pencil of light mayemerge depends upon the curvature of that surface, and has nothing to do withthe plane surface of the submerged, cover. How much of the pencil may bebrought to a focus depends upon the succeeding lenses in the combination. Thisis strictly… … 152 Potato JBlight and Rot. [Aug* POTATO BLIGHT AND ROT Some eminent chemists, such as Dr. Lyon Playfair, believe thatthe potato-plant, when healthy, is not subject to attacks from fungi.In a lecture delivered by him before the Royal Agricultural Societyof England, December 9, 1845, ^^ remarked…
Microscopy
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