ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 585 



Destruction of Microscopical Organisms in Potable Water.* 

 — Langfeldt, in seeking for a substance wbich would kill the living 

 organisms without injuring the water for drinking purposes, found 

 that citric acid (£ gram per litre of the water) killed all except 

 Cyclops and those with thick epidermis, within two minutes. 



Public Lectures in Microscopy.f — In October last the French 

 Minister of Agriculture and Commerce instituted a gratuitous course 

 of instruction in micrography at the " Ecole Superieure de Pharmacie " 

 at Paris, intended for theoretical and practical instruction in the 

 functions of microscopical experts. 



Andrews, R. T. — Mounting Entoniostraca. 

 [Inquiry for directions.] 



Sci.-Gossip, 1882, pp. 160. 

 B., T. R.— Mounting Volvox gtobator. 



[Slides mounted in 1878 are as good to-day as when fresh, except a very 

 slight loss of colour. They were mounted alive in glycerine jelly as cool 

 as possible. Volvox mounted in Canada balsam have not changed 

 colour at all.] 



North. Microscopist, II. (1882) p. 162. 

 Bale, W. M. — On Mounting Diatoms in symmetrical groups. [Post.'] 



Journ. Micr. Soc. Victoria, I. (1882) pp. 97-9. 

 „ „ Notes on Dry and Balsam Mounting. [Supra, pp. 581-3.] 



Journ. Micr. Soc. Victoria, I. (1882) pp. 101-5. 

 Barker, H. — Photo-micrography. 



[General directions for amateur beginners with dry plates.] 



Journ. Post. Micr. Soc, I. (1882) pp. 75-SO (1 fig.). 

 Barnard, F. — On Cleaning used Slides and Covers. [Supra, p. 583.] 



Journ. Micr. Soc. Victoria, I. (1882) pp. 106-7. 

 Birge, E. A. — On a Convenient Method of Imbedding. [Ante, p. 428.] 



The Microscope, II. (1882) pp. 55-7, 

 from Amer. Mon. Micr. Journ. 

 Boecker, E. — Ein neues Mikrotom mit automatischer Messerfiihrung (A new 

 microtome with automatic knife-carrier). [Post.'] 



Zeitschr.f. [nstrumentenk., II. (18S2) pp. 209-12 (4 figs.). 

 Bourne, A. G. — On certain Methods of Cutting and Mounting Microscopical 

 Sections. [Supra, d. 567.] 



Quart. Journ. Micr. Sci., XXII. (1SS2) pp. 334-7. 

 Brittain, T. — Micro-fungi : when and where to find them. 



12mo, Manchester, 1882, 92 pp. 

 „ „ Microscopical Study. 



[Brief general remarks.] 



Rep. .£■ Proc. Manchester Sci. St'd. Assn. for 1881, p. 4. 

 Brooks, W. K. — Handbook of Invertebrate Zoology for Laboratories and 

 Seaside work. 



[Containing directions for studying the general anatomy, the micro- 

 scopical structure, and the development of selected types of animal 

 life, &c] 



8vo, Boston, 1882, pp. viii. & 392 (202 figs.). 

 C, O. — On Amphipleura pellucida. 



[Discursive — ending with an anecdote of an American microscopist who 

 lived before the time of immersion objectives, and was a determined 

 seeker after the resolution of this diatom, destroying his practice and 

 reducing himself to poverty. " Weaker and weaker he grew in his 



* Chem. Centr., 1881, pp. 74-5; cf. Journ. Chem. Soc. Abstracts, xl. (1881) 

 p. 1 1 70. 



t Rev. Mycologique, iv. (1882) p. 199. 



