ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



645 



the object to be arranged. In fact the entire combination is a sort of 

 mounting and dissecting Microscope on a large scale. 



Fig, 164. 



B A u acu, E. — Two new combined inverted and vertical Microscopes. 



[Describes the Microscopes noted ante, p. 141.] 



Proc. Amcr. Soc. Micr., 9th Ann. Meeting, 1836, pp. 148-9 (1 fig.). 

 Competition for the best Microscope. 



['' Notes from our London Correspondent." " Certain amateurs of the Microscope 

 in London have been recently discussing tlie advisabihty of proposing a com- 

 petition among opticians : (1) for the best stand for the highest class of work ; 

 (2) for the best stand to be supplied for a given sum, say 20Z. ; and (3) the best 

 student's Microscope, costing, say, 5L The suggestion is thiat a handsome gold 

 medal might be awarded for the best instrument in each class. Special precau- 

 tions would doubtless have to be taken in the two latter competitions to insure 

 the strict fulfilment of the conditions as to the cost of the instruments. A jury 

 would have to be named comprising microscopists of known skill in the use of 

 the instrument, and one of the principal conditions would be that every Micro- 

 scope would be put through its paces by one or other of the jury — not by the 

 opticians or their nominees. If this matter could be brouglit to a focus I hope 

 the American opticians will join in the competition. The intention is to 

 arrange the fairest possible conditions, so that the awards may carry the highest 

 possible authority."] [Nothing has been heard of this here !] 



Queen's Micr. Bulletin, IV. (1887) p. 17. 

 C ZAP SKI, S. — Die Mikrometerbewegung an den neueren Zeiss'schen Stativen. (The 

 fine-adjustment to the new Zeiss stands.) 



[Same as Journal, 1886, p. 1051, but different fig.] 



Zeitschr. f. Instrumentenk., VIL (1887) pp. 221-2 (1 fig.). 

 N A G u R A, O. — [The Choice of a Microscope.] 



[Japanese.] Tokio Med. Journ., 1886, No. 420. 



Nelson, E. M. — New Microscope. 



[Original description. Cf. this Jom-nal, ante, p. 292.] 



Journ. Qujkett Micr. Club, III. (1887) pp. 85-8 (1 fig.). 



S THICKER, S. — Demonstrationen mit dem elektrischen Mikroskop. (Demonstrations 



with the electric Microscope.) Wiener Med. BL, IX. (1886) No. 39. 



(2) Eye-pieces and Objectives. 



" New Glycerin Immersioii Microscopic Objective." — We have been 

 favoured by a firm of Manchester opticians with a copy of a notice under 

 this beading in which the following statement is made : — 



" Their experiments and experience prove glycerin to be a much better 

 medium than water or oil. Water necessitates the Microscope being used 



