A practical treatise on the use of the microscope, including the different methods of preparing and examining animal, vegetable, and mineral structures (1848)
Quekett, John, 1815-1861 · London, H. Bailliere · leaf 174
134 PRACTICAL TREATISE ON THE MICROSCOPE. a conical frame-work in wire, are exceedingly useful, andperhaps more so than those of metal. The shades answertwo purposes, the one to keep away superfluous heat andlight from the eyes, and the other to throw a good lighton the table. The heat is not…
Microscopy
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