346 



Mr. W. B. Stokes (Hon. Secretary) exhibited and described a 

 cheap silvered side-reflector. A shilling biconvex lens of 6 in. 

 focus was cut in half, and one curved surface of each half was 

 silvered. Each semicircle provided an efficient side-reflector at 

 a nominal cost. 



At the meeting of the Club held on March 20th, 1908, 

 Professor E. A. Minchin, M.A., President, in the Chair, the 

 minutes of the meeting held on February 21st were read and 

 confirmed. 



Messrs. F. C. Croger, D. C. Wingate, A. C. Banfield, J. C. 

 West, and B. Blackbourn were balloted for and duly elected 

 members of the Club. 



The Hon. Editor, Mr. F. P. Smith, exhibited under a micro- 

 scope a preparation showing the formation of a new claw in 

 spiders. In describing the object, he said that, when moulting, 

 the spider sheds the claw as well as the whole skin. He had 

 searched for a really good specimen of this object for a number 

 of years, but there was a good deal of luck in obtaining it. The 

 best way to secure such was to take a spider with a very trans- 

 parent skin but very dark claws, and wait ; or, better, of 

 course, take a large number — he would recommend specimens 

 to be bred from the same batch of eggs — and watch the 

 moulting. As soon as one specimen was observed to be moulting 

 another individual from the same batch should be taken and 

 held by a single leg. This would, as likely as not, be thrown 

 off, and had simply to be treated with potash, dehydrated, 

 flattened, and mounted in balsam. If not satisfactory, take 

 another leg, and try again. 



Mr. A. E. Hilton read a most interesting paper on " The 

 Cause of Reversing Currents in Plasmodia of Mycetozoa." 



Mr. C. D. Soar, F.R.M.S., read a paper on the genus 

 Ilydrachna, illustrated by drawings of all the twenty-one British 

 species, and also a chart showing the specific differences in the 

 dorsal plates. 



At the meeting of the Club held on May 15th, 1908, Pro- 

 fessor E. A. Minchin, M.A., President, in the Chair, the minutes 

 of the meeting held on March 20th were read and confirmed. 



