ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
659 
which actuates this movement is seen at T ; to this is attached by means 
of a flexible joint the rod S R ; this enables focussing to be conveniently 
performed at the screen end of the camera. 
Favre jst Chau vet — De la photographic microscopique. 
Lyon Medical, 1899, No. 17, p. 584. 
T oi son, J. — Presentation de Microphotographies. 
Comptes Bend, de I’Ass. des Anal. Baris, 1899, p. 19. 
Walmsley, W. H. — Photomicrography with Opaque Objects. 
Trans. Amer. Micr.Soc., XX. 1 1899) p. 189. 
(5) Microscopical Optics and Manipulation- 
Kerber, A. — Beitrage zur Bioptrik. (Treatise on Dioptrics.) Part 5. 
Leipzig (Fock), 1899, 8vo, 16 pp. 
(6) Miscellaneous. 
Douglas, C. C. — Chemical and Microscopical Aids to Clinical Diagnosis. 
Glasgow (Maclehose), 1899. 
Garbini, A.— Mannale per la tecnica del microscopio nelle osservazioni istolo- 
giche, anatomiche, zoologiche. 4th ed. Milan (Vallardi), 1899, 8vo, 304 pp. 
Goldstein, M. A., M.D. — The Microscope, its Educational and Practical Value. 
Journ. of App. Micr., Sept. 1899, pp. 490-2. 
Morel et Sou lie— Manuel de technique microscopique. 
Paris (Soc. d’edit.), 1899. 
B. Teclinique.* 
Cl) Collecting- Objects, including: Culture Processes. 
Growing Anaerobes in Air.f — Mr. W. W. Alleger states that certain 
anaerobic bacteria (tetanus, symptomatic antlirax, malignant oedema) 
grow readily in glucose-agar stick cultures, without any precautions to 
preclude oxygen, if the tubes be placed in the steam steriliser for ten 
minutes, and then quickly cooled just before inoculation, although no 
growth, or only a scanty one, takes place in the same medium under 
identical circumstances if this precaution is omitted. The explanation 
given is that the free oxygen is driven out by the heat, and growth 
takes place before the medium has had time to reabsorb sufficient air to 
interfere with development. 
Cultivation of Typhoid Bacilli from the Rose-coloured Spots. I— 
Dr. Neufeld recommends the bacteriological examination of the rose- 
coloured spots in typhoid on account of its simplicity aud rapidity. Out 
of ten cases he had only one negative result, and in that instauce the 
other methods of diagnosis failed. He ascribes the success of his method 
to the use of liquid media. It is interesting to note that in one case the 
method was successful where the Widal reaction failed. 
* This subdivision contains (1) Collecting Objects, including Culture Pro- 
cesses ; (2) Preparing Objects ; (3) Cutting, including Imbedding and Microtomes; 
(4) Staining and Injecting ; (5) Mounting, including slides, preservative fluids, &c. ; 
(6) Miscellaneous. 
+ Journ. Applied Microscopy, ii. (1899) p. 511. 
t Zeitschr. f. Hyg. u. Infektionskr., xxx. No. 3. See Centralbl. Bakt. u. Par., 
l te Abt , xxvi..(1899) pp. 149-50. 
