QUEKETT MICROSCOPICAL CLUB. 89 



They are all of the genus Habrotrocha, and are named : H. 

 insigniSy H, sylvestris, H. pavida, H. fiava, H. longula. 



The President complimented Mr. Bryce on having added 

 five new species to the Bdelloid fauna, and a vote of thanks 

 was accorded him by the members for his paper. 



At the 511th Ordinary Meeting of the Club, held on 

 November 23rd, 1915, the President, Prof. Arthur Dendy, 

 D.Sc, F.R.S., in the chair, the minutes of the meeting held on 

 October 26th were read and confirmed. 



Messrs. Geo. W. King, John Geo. Bradbury and Arthur P. 

 Drake were balloted for, and duly elected members of the 

 Club. 



A letter was read from Mrs. Minchin in acknowledgment of 

 the resolution of sympathy transmitted to her from the last 

 meeting. 



Mr. W. R. Traviss exhibited and described a new adaptation 

 to Swift's well-known portable microscope. He stated that 

 from time to time various modifications had been effected in 

 the instrument, always keeping in view, however, the retention 

 of its portability. The latest was that of a binocular body. 

 This is effected in a very novel and ingenious manner, which 

 allowed the instrument to be folded up so that it required only 

 the same small leather case as the monocular. The eye-pieces 

 are of the usual Continental size. The draw tubes pull out 

 separately for adjustment to the different inter-pupillary distance 

 of the user's eyes, and are marked in millimetres, thus enabling 

 the distance to be registered for future reference. The Wenham 

 Prism is that known as the short body prism. He also exhibited 

 another prism which can be supplied for placing over the eye- 

 piece, which effects a more comfortable adjustment in some 

 cases, and by a slight rotation remedies a not uncommon defect 

 in observers' eyes, where there is a want of agreement in the 

 visual planes. Several members spoke with much approval of 

 the arrangement. Mr. Ainslie thought the instrument was a 

 very beautiful little thing, and congratulated Mr. Traviss on the 

 design. He especially praised the prism adjustment, which he 

 had found enabled him to use the binocular with great comfort, 

 and had no doubt that many who experienced a difficulty in 



