MICROSCOPIC 



ILLUSTRATIONS 



OF 



LIVING OBJECTS, 



WITH 



RESEARCHES CONCERNING THE METHODS OF CONSTRUCTING 

 AND INSTRUCTIONS FOR USING THEM. 



THIRD EDITION. 



TO WHICH IS ADDED, 



Supplement on tlje SFedficatam of $Hitva$ta$it p!>en0mena, 



AND 



AN EXACT METHOD OF TESTING MICROSCOPES. 



BY C. R. GORING, M.D. 



BY ANDREW mTCHARD, M.R.I., 



RON. MBM. BOC. ARTS, EDINBURGH; 

 kVTHO* OF "JIATOBAI. BISTORT OF ANIMALCULES," "A BISTORT OW IKFCSORIA, LIVISO AHD FOSIL," 



&c. &c. 



flontott: 



WHITTAKER AND CO., AVE-MARIA-LANE. 



1845. 



