ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



443 



The i^eculiarity of tlie stage having four scroll supports, as iu the 

 Due de Chaulnes' instrument, suggests the influence of one design upon 



Fm. 65. 



the other, and we have therefore ventured to classify the Microscope 

 under this heading. 



M iJLLEE, K. — Die Verwendbarkeit des His'schen Embryographen, (The utility of 

 the His Embryograi)h.) Natunoiss. Wochenschr., II. (1888) No. 22. 



(3) Illuminating- and other Apparatus. 

 Rogers' Eye-piece Micrometer.* — Dr. E. H. Ward describes a form 

 of eye-piece micrometer devised by Prof. W. E. Eogers. 



* ' Eemaiks at the Microscopical Sectiou of the Troy Scientific Association,' 1889, 

 February 4th. 



