Transactions of the Academy of Science of Saint LouisAcademy of Science of St. Louis, 1856 - Science "Celebration of the fiftieth anniversary of the first meeting," in v. 16 |
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Page 165
... plate in the light , as a positive , while for very short exposures the best results are attainable by developing as ... plate by a change in the illumination of the plate while in the bath , as has been pre- viously explained . The more ...
... plate in the light , as a positive , while for very short exposures the best results are attainable by developing as ... plate by a change in the illumination of the plate while in the bath , as has been pre- viously explained . The more ...
Page 166
... Plate XII . 1 , Electrograph with light from one window falling on the left half of the plate . The right half is in shadow . Negative pole . -2 , Electrograph with positive pole with plate exposed in a moderately dark room . Discharge ...
... Plate XII . 1 , Electrograph with light from one window falling on the left half of the plate . The right half is in shadow . Negative pole . -2 , Electrograph with positive pole with plate exposed in a moderately dark room . Discharge ...
Page 210
... plate be a fast plate , like the crown plate of Cramer , the exposure may be made two to four minutes in length . For the first attempt the latter interval is to be preferred . The exposure may be made as much longer as may be desired ...
... plate be a fast plate , like the crown plate of Cramer , the exposure may be made two to four minutes in length . For the first attempt the latter interval is to be preferred . The exposure may be made as much longer as may be desired ...
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Académie des Sciences Academy of Science active membership Agaricocrinus angle aperture APPERTAINING TO HUMAN ball discharge Batocrinus beak brachial valve branches Burlington canaliculus Carboniferous Carlinville caruncle caudex Chonetes Chonopectus sandstone Chouteau Coll concave conjunctiva convex crown curve density developed Devonian diameter Dolatocrinus dorsal Edmondia excretory duct exposure fauna fossils gaseous genus Geological Gesellschaft GLANDS APPERTAINING glandular heat hinge-line HUMAN EYE illustrated Keokuk Kinderhook lacrymal sac length light limestone lines of growth lobules Louis lower eyelid mass Meibomian glands Michigan collection Missouri nearly nebula negative Nipher oblique outer palpebral pedicle pedicle valve plants plate Platycrinus posterior margin Prairie present pressure radiating radius Remarks rhizomes root rounded sebaceous glands shell side slope Société Society solar solar nebula species stars stems striae Surface marked tap-root temperature tion tissue track transverse type specimen umbonal ridge upper eyelid ventral margin Verein vertical volutions