Microscope

The Instrument is this. I prepare a pretty capaceous Bolt-head AB, with a small stem about two foot and a half long DC; upon the end of this D I put on a small bended Glass, or brazen syphon DEF (open at D, E and F, but to be closed with cement at F and E, as occasion serves) whose stem F should be about six or eight inches long, but the bore of it not above half an inch diameter, and very even; these I fix very strongly together by the help of very hard Cement, and then fit the whole Glass ABCDEF into a long Board, or Frame, in such manner, that almost half the head AB may lye buried in a concave Hemisphere cut into the Board RS; Schem. 1. Fig. 1. then I place it so on the Board RS, as is exprest in the first figure of the first Scheme; and fix it very firm and steady in that posture, so as that the weight of the Mercury that is afterwards to be put into it, may not in the least shake or stir it; then drawing a line XY on the Frame RT,


____________________________________________________


MICROGRAPHIA:


OR SOME Physiological Descriptions OF MINUTE BODIES


MADE BY MAGNIFYING GLASSES WITH OBSERVATIONS


and INQUIRIES thereupon.


By R. HOOKE, Fellow of the ROYAL SOCIETY. Published 1664


Available from www.gutenberg.org


____________________________________________________

Random image

Download Photo

Tag Cloud

  • 1 photos are tagged with Artillery
  • 1 photos are tagged with Maps
  • 2 photos are tagged with Sight
  • 1 photos are tagged with Sound

Album Tree

Popular tags

  • 1 photos are tagged with Artillery
  • 1 photos are tagged with Maps
  • 2 photos are tagged with Sight
  • 1 photos are tagged with Sound