PKOCEEDINGS OF THE SOCIETY. 373 



Mr. J. D. Siddall then made a communication on " The Life-history 

 of a Marine Diatom from Bournemouth," illustrated by lantern slides 

 showing pseudopodial extensions through the canals in the peripheral 

 borders of the diatom, and expressed the opinion that the demonstration 

 of pseudopodial locomotion in the life-histoiy of a diatom was being 

 exhibited for the first time that evening. This communication provoked 

 considerable discussion, in which Messrs. Spitta, Earland, Hilton, and 

 Brown took part. After Mr. Siddall had replied, a very hearty vote of 

 thanks for his interesting paper was carried with acclamation by those 

 present. 



Dr. Eyre read a paper by Mr. E. B. Stringer, " On a Modified Form 

 of the Lever Fine-adjustment, and a Simple Turn-out Device for the 

 Substage Condenser ; with a note on the use of the Bertrand Lens." 



A vote of thanks was accorded to Mr. Stringer for his communica- 

 tion. 



A vote of thanks was accorded to Mr. Curties for the loan of Micro- 

 scopes to illustrate Mr. Siddall's paper. 



The President announced that Mr. Thomas H. Court would discuss 

 " The Microscope Makers of the 17th Century" at the Brass and Glass 

 Section Meeting to be held on April 24. 



The next Meeting of the Society was announced for May 15. 

 Fellows who had not hitherto signed the KoU were called upon to 

 do so. 



The following Instruments, Objects, etc., were exhibited : — 



Mr. J. W. Ogilvy : — Improved Inclinable Greenhough Binocular Micro- 

 scope, and a Double Ocular for demonstration purposes, after Edinger, 

 both by E. Leitz. 



Mr. F. W. Watson Baker : — New Instantaneous B,eflex Micrographic 

 Camera. 



Mr. J. D. Siddall : — Group of five specimens of Coscmodiscus heliozoides, 

 mounted in formalin and sea-water, showing pseudopodia under 

 l^-in. lens and dark-ground illumination ; Goscinodiscus heliozoides, 

 living specimens under ^-in. lens and dark-ground illumination ; 

 lantern slides, in illustration of his paper. 



New Fellows : — The following was elected an Honorary Fellow of 

 the Society : Dr. Eugene Penard. 



The following was elected an Ordinary Fellow of the Society : Gerald 

 Francis Gurrin. 



