QUEKETT MICROSCOPICAL CLUE. (361 



Messrs. Sydney Harold Robinson, Walter E. T. Hartley and 

 John F. Donald Tutt were balloted for and duly elected mem- 

 bers of the Club. 



The Hon. Secretary announced the presentation to the Club's 

 Cabinet of a further five slides of rare mosses by Mr. G. T. Harris. 

 Also an addition to the Club's album of a photograph of Mr. 

 G. C. Karop, who was Secretary of the Club from 1883 until 

 February 1904. 



Mr. Seabury Edwardes, F.R.M.S., contributed a paper giving 

 some practical details on mounting diatoms in phosphorus. The 

 paper was read in abstract by the Hon. Secretary, but whether 

 any member has the temerity to put Mr. Edwardes' directions to 

 a practical test seems very doubtful. The results even on the 

 author's showing are somewhat problematical, and the process 

 very dangerous. It is hardly likely to come into use, as there 

 are simpler methods of mounting diatoms in high refractive 

 media. 



Further notes on the cultivation of plasmodia of Badhamia 

 utricular is were given by Mr. A. E. Hilton. A year ago he 

 called attention to a method of cultivating this plasmodium on 

 bread, with occasional applications of a solution of ammonium 

 phosphate and cane-sugar. In the discussion following, two 

 points were raised which he was unable to answer. One was 

 whether this particular species of Mycetozoa could be obtained 

 by the cultivation of spores ; the other, whether it would, when 

 artificially fed, form sporangia. As a result of further investiga- 

 tion, Mr. Hilton stated that it is possible to cultivate the spores, 

 but not always easy. With regard to the second question, 

 whether it would form sporangia when artificially fed, he was 

 now able to state that it would, but with certain reservations. 

 On February 19th last a plasmodium of B. utricularis was started 

 by reviving a fragment of sclerotium, which was treated entirely 

 with bread and water and the chemical solution, adding, how- 

 ever, calcium phosphate, with a view to supplying the lime 

 usually found in this form of sporangium. The cold weather 

 made growth slow ; but on May 5th the plasmodium changed 

 into a quantity of sporangia. There are striking differences 

 between these and those produced under natural conditions. 

 The shape is similar ; but instead of the usual cinereous hue, 

 they are a dull purple-black, cinnamon-brown, or even pale 



