( 6 ) 



PAGE 



Protopliyta. 



ViNCENZi, L. — Chemical constituents of Bacteria 631 



SoKOKiN, N. — New Species of Spirillum • 631 



Fbankland, G. C. & P. F. — New Micro-organisms obtained from, Air 631 



Fbauklakd, p. F., & T. G. BlAut— Distribution of Micro-organisms in the Air .. 631 



MICEOSCOPY. 

 c. Instruments, Accessories, &c. 

 (1) Stands. 

 Jacbebt's (Leon) Microscopes, Eye-pieces, Objectives, &c. (Plates XII., XIII., XIV., 



and Figs. 155 and 156) .. .. 632 



Havbcb. & JjOhb Optical Co.^s Trichinoscoj[>e (Fig. 157) .. .. .. 638 



B.ogj:ss-Boi<ij> Universal Comparator (Figs. 158 and. 159) .. 639 



Geneva Co.'s Comparator (Fig. 160) .. .... .. 642 



„ „ Beading Microscope (Fig. 161) 643 



Ca^w^dge Scientific Instrument Co.'s Beading Microscope (Fig. 162) 643 



CAHFATia's (Givseppe) Compound Microscope (Fig. 16S) €43 



Hamjis's (F.li.) JJissecti7ig Microsc(^e (Fig. 16i).. ., .. .. 644 



(2) Eye-pieces and Objectives. 



^'■'S'EVi Glycerin Immersion Microscopic Objective" 645 



Zeiss's Objective-changer, with dide and centering adjustment (Figs. 165 and 166) .. 646 



(8} Illnminating: and otbier Apparatus. 



Nelson, E. M-, & G. 0. Kaeop — Value of Achromatic Condensers 647 



Bavscb. Si'LonB Optical Co.'s Condenser (Fig. 167) .. 648 



MiJjZs' (J. Ij.'W.)^^ Desideratum" Condenser 648 



la AcaET' 8 Camera Lucida for Magnifiers (Figa. 168 &nd 169) 649 



Pkism/ot Dramngf (Fig. 170) 650 



"BAVSca & l^OTAB Optical Co.' s Mechanical Stages (Figs. 171 and 172) 650 



Smssow's (A.) Microstat (Fig. 173) 651 



Darling's (S.) iScrezo-Mcromefer (Figs. 174-177) 652 



Pagan's (A.) Groicmgr iSZtde (Figs. 178-180) 655 



Chalande, J. — Apparatus for examining living Myriopoda 656 



GmFFiTu's (B. U.) Mechanical Finger (Figs. 181-183) 656 



„ „ Suhstage Diaphragm-holder and Glass Diaphragms (Fig. 184) 657 



Fleischl's (E. V.) F^momefe/- (Fig. 185) 657 



Thoulet, J. — Measurement by Total Beflection of the Befractive Indices of Micro- 

 scopic Minerals (Fig. 186) 659 



(4) Photomicrography. 



Nelson's (E. M.) PAotomicrogrropAtc Camera (Fig. 187) 661 



Feancotte, p. — Photomicrographic Camera fm- the Simple or Compound Microscope 662 



Benecke, B,, & S. T. Stein — Focusing in Fhoto-micrography (Figs. 188 and 189) . , 662 



Isbael, O. — Photomicrography with High Powers 664 



Cbookshank's (E. M.) ' Photography of Bacteria ' and ' Manual of Bacteriology ' . . 664 



(5) Microscopical Optics and Manipulation. 



Bahtalini, G. — Method of determining the index of refraction when the refracting 



angle islarge 665 



Kesoldtion o/ 200,000 imes to </ie irtcft. .. .. 665 



(6) Miscellaneous. 



Micboscopical iSoc/e<2/ o/ CaZcit/to 667 



$. Technique. 



(1) Collecting Objects, including' Culture Processes. 



Hueppe, F. — Blood-serum Cultivation (3(59 



(5) Preparing- Objects. 



Goodall, G. L. — Method for subjecting Living Protoplasm to the action of different 



liquids ,. 669 



Henking, H. — Modes of preparing Ova ,, qjq 



MoLiscH, H. — New Method of distinguishing Vegetable from Animal Fibre .. ,, 670 



Pianviee, L. — Mode of examining Mucous Membranes .. ,. gjo 



