ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



301 



MICEOSCOPY. 

 a. Instruments, Accessories, &c. 



ScMeck's Bacteria Microscopes.* — F. W. ScMeck supplies the 

 instruments shown in figs. 45 and 46, ostensibly for the examination 

 of Bacteria. 



They are chiefly remarkable for the strange position of the rack 



Fig. 45 



Fig. 46. 



and pinion of the coarse adjustment, which is placed in the front of 

 the body-tube instead of behind. It seems to us that this change has 

 nothing to recommend it, and we are at a loss to understand why it 

 has been adopted. 



The illuminator is a modified Abbe condenser. 



* See Dippel's ' Grundziige der Allgemeinen Mikroskopie,' 1885, p. 233. 



