ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



547 



MICKOSCOPY. 

 o. Instruments, Accessories, &c. 



Lossner's Tele-microscope.* — 0. M. Lossner has patented an 

 instrument under this name. The objective forms a reduced image 

 of a somewhat distant object, and this is enlarged by an ocular of 

 four lenses. The construction of some is in hand, and "if suc- 

 cessful this instrument, even if only for small enlargements, will, 

 without doubt, be a welcome tool for the observation of living 

 insects, &c." 



Prazmowski's Micrometer Microscope. — This Microscope 

 (Fig. 91) was designed by M. Prazmowski for investigations in 



Fig. 91. 



which measurements are to be recorded, and when it is also required 

 to note precisely the angle of the illumination, &c, for purposes of 

 repetition. We believe that it was made upon a special order (and 

 not subsequently reclaimed), so that M. Prazmowski must not be 



* Centr.-Ztg. f. Opt. u. Mech., iii. (1882) p. 108. 



2 O 2 



