ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



G95 



means of the pinion P in the pillar I, the Microscope can be rotated 



liorizontally to the right or left. The centre of an object on the stage 



corresponds with the centre of motion. By 



means of this rotation any angle, either of Fig. 88. 



solar or artificial light, can be obtained for 



jihotographing and projecting, also projecting 



opaque microscopic objects, or projecting with 



transmitted light. 



To use the attachment with solar light, the 

 plate U can be removed from the stereopticon, 

 and attached by means of a bracket to the 

 front of the mirror-board (fig. 84, F) of the 

 solar instrument, adjusted the same as with 

 artificial light. For photographing micro- 

 scopic objects a camera-box must be con- 

 nected with the tube K, the same as is used 

 with transmitted light to illuminate the ob- 

 ject. 



Old Italian Microscope. — In the Museo 

 Copernicano, Rome, we noted the Microscope 

 shown in fig. 88, which is reproduced from 

 a photograph that we obtained by the courtesy 

 of the Curator, Dr. A. Wolynski. The origin 

 is unknown, but it may, we think, be 

 inferred with some probability to be a 

 very early form of Microscope from the 

 fact that it was evidently devised for 

 viewing opaque objects only. Our con- 

 jecture is that, from the peculiar design 

 of the nose-piece, it may have been a very 

 early modification of a " Divini " Micro- 

 scope. The body-tube slides through the 

 tube-socket, which is supported by orna- 

 mented tripod scrolls on a raised base ; 

 the whole is of brass. The eye-jjiece 

 lenses are held in their cells by a thin 



plate of brass notched out, the teeth being merely folded on the ed»es 

 of the lenses. 



A M A T E u R. — Notes on the Microscope-stand and some of its accessories. 

 [The foot or base — The sujiporting pillars — The anu — The body.] 



The Microscope, IX. (1889) pp. 264-75. 

 Behrens, VV., a. Kossell, and P. Schiefferde.cker. — Die Gewebe des 

 menschlichen Kbrpers und ihre mikroskopische Untersuchung Band I. Das 

 Mikroskop und die Methoden der mikroskopisclien Untersucliung. (The tissues 

 of the human body and their microscopical examination. Vol. I. The ftlicroscope 

 and the methods of microscopical research.) 



viii. and 815 pp., 193 figs. 8vo, Braunschwcis-, 1889. 

 Matthews, C. G., and F. E. L o t t.— The Microscope in the Brewery and Malt- 

 house, xxi. and 198 pp., 30 figs., and 22 pis. 8vo, London and Derby, 1889. 

 Microscope, The New Acme No. 5 with rack and pinion. 



Queen's Mia: Bulletin, VI. (1889) p. 25 (1 pi.). 

 Watson & Sons' Edinburgh Student's Microscope. 



Engl. Mech., XLIX. (1889) p. 471 (3 figs.). 

 Wool MAN, G. S. — Selecting a Microscope. 



Amer. Mon. Micr. Jouni., X. (1889) p. 182. 



