ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 105 



the maker. The whole forms a very complete and accurate book of 

 reference. 



Die neue Spektralmethode der Lippmannsohen Farbenphotographie. 



Centralbl. Zeit. f. Opt. u. Mech., xxviii. (1907) pp. 219-21 (2 figs.). 



Die Pb.otograpb.ie in nattirlichen Farben. Tom. cit., pp. 254-5. 



(6) Miscellaneous. 



Quekett Microscopical Club. — The 443rd Meeting of the Club was 

 held on November 15, the President, Dr. E. J. Spitta, F.R.A.S., 

 F.R.M.S., etc., in the chair. Mr. James Murray communicated a valu- 

 able paper, which was read by Mr. D. J. Scourfield, F.Z.S., F.R.M.S., 

 on " PhiJodina macrostyla Ehr., and its Allies." Mr. F. P. Smith made 

 some remarks on "British Spiders taken in 1907," and dealt with some 

 twenty species, of which one, Tarantula nemoralis, taken at Bexhill High 

 Woods on June 21, is for the first time recorded as British. 



At the 444th Ordinary Meeting held on December 20, the President 

 in the chair, Mr. J. I. Pigg, F.R.M.S., exhibited lantern photomicro- 

 graphs illustrating the development of the prothallus from the spore of 

 the maidenhair fern. A paper communicated by Mr. E. M. Nelson, 

 F.R.M.S., on " Some Hairs upon the Proboscis of the Blow-fly," was 

 read by the Hon. Sec. Four kinds of hairs were described. Mr. E. F. 

 Law exhibited a number of lantern slides in colour obtained by the 

 Lumiere autochrome process. They were photomicrographs, mostly 

 x 1000, of the oxidisation colours obtained by heat-tinting the polished 

 surfaces of phosphor-bronze, gunmetal, and various commercial cast- 

 irons. 



B. Technique.* 

 (1) Collecting Objects, including' Culture Processes. 



Method by which Sponges may be Artificially Reared.j — H. V. 

 Wilson gives the following method. Into a tub about GO x 30 cm., 

 and covered with glass, a half-dozen sponges, freed from live oysters 

 and crabs, are put. They are raised from the bottom on bricks. 

 The tub is emptied, filled, and flushed for some minutes, thrice daily. 

 Direct rays of the sun should be avoided. In the course of some weeks 

 the sponges regenerate, giving rise to small masses of undifferentiated 

 tissue. When in this condition, if these masses be attached to wire 

 gauze and suspended in a live-box floating at the surface of the open 

 water of a harbour, the masses will in a few days grow and re-develop 

 spores and oscula, flagellated chambers, and skeletal arrangement of the 

 normal sponge. 



Cultivation of Gonococci.J — Nakao Abe uses a meat extract, which 

 he prepares as follows : 500 grm. of chopped-up beef are immersed in 

 1000 c.cm. of tap-water, and placed in a refrigerator for 18-24 hours. 



* 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, preserving fluids, etc. ' r 

 (6) Miscellaneous. t Science, xxv. (1907) pp. 912-15. 



% Centralbl. Bakt. Orig., lte Abt., xliv. (1907) pp. 705-9. 



