The botanist's companion; or, Directions for the use of the microscope (1860)
Balfour, John Hutton, 1808-1884. [from old catalog] · Edinburgh, A. and C. Black · leaf 39
he pestle ought only to be hardened and annealed to a strawcolour, and should be of course convex, fitting the opposing and equal con-cavity of the mortar. The purpose of the projecting ledge is to preventthe smaller particles of diamond spurting out when the pestle is struck bythe hammer. Mr.… … Fig. 19. with four joints, attached to a basement fixed to the table of the lathe.This base has a motion (for adjustment only) in a horizontal plane, bywhich we may be enabled to place the upper joint in a parallel plane withthe spindle of the lathe. This may be called the azimuthal adjustment.The…
Botany · Microscopy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
