d a G., and of the widow of Alvan Clark, the father. back of it a plane mirror, silvered on its anterior face, prominence would soon be created there. The iron The grounds are very prettily kept as a luxuriant is placed The lamp and prism are so placed that the sand is the only cutting agent. It… … The lens then ap- factory. In it the pears brightly il- great Pultowa, luminated, be- Washington, and cause the eye so Lick objectives nearly coincides were made. The in position with least imaginative the focus. The visitor cannot but work is done in a feel a sense of in- spiration a s h e…
Contained · Manufacture · Patented · Lens · Scientific American · Patents · Pulverizing attachment · Practical treatise · Boracic acid · American supplement · Years ago · Triple expansion · Express money · Address munn · Perspective view
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