290 SUMMARY OF CUKRENT RESEARCHES RELATING TO 



Stoddee, C. — The Podura Scale. 



[Approval of article by Prof. R. Hitchcock, ante p. 135. " Dr. Woodward's 

 theory is the correct one of tlie structure of the Podura Scale. The spines 

 have no tangible existence."] 



Amer. Mori. Micr. Jouni., IV. (1883) p. 4. 

 Van Beunt, C. — Ampkipleura pelludda. 



[" Eesolved by Mr. Spencer with an unfinished 1-lOth in. objective, a flour- 

 barrel being used for a table, and the mirror bar of the Microscope being 

 so loose that it had to be propped up with a stick. Daylight was used for 

 illumination."] 



Amer. Mon. Micr. Joum., IV. (1883) p. 89. 

 White, T. C. — Photo-micrography, 



[Report of demonstration at Quekett Microscopical Club. Post.'] 



Engl. Mcch., XXXVI. (1883) p. 492 (1 fig.). 

 „ „ The President's Address. (Quekett Microscopical Club.) 



[Traces "some of the successive steps by which we have attained to our 

 present position iu the use of the Microscope."] 



Joum. Quek. Micr. Cluh, I. (1883) pp. 112-24. 

 Whitson, J. — The Photography of Microscopic Sections. 



[Contains description of the method adopted for taking photo-micrographs 

 of Sections of Adeno-sarcoma of Mamma.] 



Sep. Repr. Glasgoiv Med. Joum., 1883, March, 5 pp. (1 photomicr.). 



J3. Collecting-, Mounting and Examining Objects, &c. 



Collecting Small Organisms.* — In order to procure small 

 organisms for microscopical examination, living in their natural 

 habitat. Professor K. Mobius fixes some glass slides in a piece of 

 wood in which cuts, a few millimetres deep and of the thickness of 

 the slides, had been made with a saw. The wood was nailed to a pole 

 attached to a landing-stage in Kiel harbour, in such a way that the 

 wood with the slides was a few feet above the sea-bottom. For the 

 examination of the organisms on the glass slides, they were removed 

 from the wood, and immediately fixed in a cork, and floated in a 

 glass vessel full of sea-water. 



Upon such glass slides hydroid polyps, annelids, bryozoa, in- 

 fusoria, rhizopoda, diatoms, &c., attach themselves. 



In the aquarium slides may be similarly suspended from corks in 

 order to have infusoria, rhizopoda, &c., for immediate examination. 



Chloride of Gold and Cadmium for Nerve-Terminations, f — 

 Prof. G. V. Ciaccio minutely describes a process for treating the ter- 

 minations of the motor-nerve fibres in the striated muscles (of the 

 torpedo) which is not Loewits', nor yet Eanvier's, but partly one and 

 partly the other. 



After detaching the muscles and stretching them on a glass plate 

 their fibrous envelope is carefully removed. The anterior third, which 

 contains nearly all the nerve-terminations, is cut off and again cut up 

 into pieces of 1 mm. These are placed in fresh lemon-juice (filtered 

 through blotting-paper), and left for five minutes. Then with bone 

 forceps each piece is washed in distilled water, and placed in 4 c.cm. 

 of a solution of chloride of gold and of cadmiimi (1 per cent.), in 



* Zool. Anzeig., vi. (188.3) p. 53. 



t Journ. do Microgr., vii. (1883) pp. 38-41. 



