QUBKETT MICROSCOPICAL CLUB. 355 



Mr. Jackson, who is in charge of the Plaistow Ked Triangle Club, 

 asking if a few members could arrange to give a microscopical 

 exhibition at the Club, which is in the East End and has 1,500 

 members. Mr. Russell very kindly consented to arrange for such 

 an exhibition, and any members able to help should communicate 

 with him. The Secretary announced that he had asked Messrs, 

 Ogilvy & Co. for some descriptive pamphlets of the lamps 

 that were used at their microscopical exhibition at the last gossip 

 meeting, and distributed some that he had received. Messrs. 

 Ogilvy's exhibition was very much appreciated by the members. 

 Various objects were beautifully shown under about nine micro- 

 scopes, ranging from the highest powers down to the lowest. 

 Perhaps the most interesting exhibit was a slide of living trypano- 

 somes shown by dark-ground illumination. The Hon. Secretary 

 announced that at the meeting on April 11th Mr. J. Wilson would 

 give " A Short Account of the Genus Closterium," and Mr. N. E. 

 Brown an address on " Imitative and Windowed Plants." The 

 Hon. Secretary said that he had been trying the Ediswan " Fullo- 

 lite " electric lamp for microscopical work, and found it very 

 brilliant. He exhibited a metal lantern that he had made to 

 screen the light from the observer's eyes, and also to provide 

 facilities for reducing the light by means of screens. The 

 President exhibited a young Cristatdla mucedo hatching out from 

 the statoblast. He had been examining Cristatella under a high 

 power, and had noticed several points of interest. The true 

 direction of the currents of water caused by the cilia of 

 the tentacles is down towards the mouth and out between the 

 tentacles. Fine setae were found to project from the sides of 

 the tentacles towards the adjacent ones, and the inside surfaces 

 of the tentacles were found to be covered with fine hairs. The 

 membrane of the calyx may be seen to extend over the outer 

 sides of the tentacles, 



Mr. B. S. Curwen was then called upon to read his paper on 

 " Mounting in Glycerin with Wax Seals — with special reference to 

 Entomostraca," Glycerin, said Mr. Curwen, is a colourless, odour- 

 less, viscous liquid miscible in all proportions with both water and 

 alcohol, but insoluble in ether. Its melting-point is 17° C, and 

 its boiling-point 290° C, when pure. Glycerin is very deliquescent, 

 and the absorption of even a small amount of water will prevent 

 crystallisation at temperatures much below 17° C. Its refractive 



