8y 



" Quarterly Journal of Microscopical Science " by purchase. 

 "Annals of Natural History" ... ••• >» )> 



Eeprints of papers on Spermatozoa from the") 



** Quarterly Microscopical Journal " > from Mr. Heneage Gibbes. 



2 Slides in illustration of the above ... J 



1 Slide ... ... ... ... ... „ Mr. H. Morland. 



The thanks of the meeting were voted to the donors. 

 A letter of thanks from the Tower Hill Microscopical Society, for 

 assistance rendered at their recent Soiree, was read. 



The following communication from Professor Hamilton Smith, of Geneva, 

 U.S., " On a Method of Dry Mounting," was read by Mr. Hailes, and a 

 specimen exhibited : — " The gutta percha tissue rings recommended by 

 Dr. Tulk I shall always use hereafter. A punch makes them beautifully 

 and rapidly — nothing is simpler than the process. The specimens to be 

 mounted are prepared on the cover, then a ring of gutta percha tissue is 

 placed on the glass slip, the cover laid on it, and the three held together by 

 forceps and gently warmed. This will serve to attach them. Now 

 removing the forceps, warm the slide and cover, and press the latter with 

 foi-ceps or a burnisher till (looking obliquely) one sees the attachment is 

 complete. This is all. No varnishes or turn-table work are required, and for 

 all I can see, no siceating or destruction of the preparation by change, or 

 drying of substance of ring, as will happen to all asphalte preparations." 



Mr. T. C. White thought there would be an objection in the heat 

 required in this mode of mounting, and also fancied it would, instead of 

 preventing, be likely to conduce to '* sweating " inside the covering glass. 



The President noticed some air bubbles in the ring of the specimen 

 placed in his hands, and thought that if they should coalesce it would injure 

 the cell. 



Mr. Hailes said the best way to avoid " sweating " was to leave the cell 

 partially open. Heat would certainly be fatal to such objects as butterfly 

 scales. 



Mr. Ingpen exhibited a new form of low power objective by Zeiss, so 

 constructed that by turning a milled collar a great alteration in the magni- 

 fying power could be obtained — the definition was remarkably good and the 

 field very flat. 



Dr. Matthews said he had some time since the pleasure of an evening's 

 conference with Dr. Carpenter, and found that he used scarcely any other 

 low power than this one. He spoke of it with unqualified praise, and it 

 certainly seemed to answer the purpose of several objectives. 



Mr. R. G. West exhibited and described a new form of " Tilting Stage " 

 for the examination of objects in various directions. 



Mr. James Smith enquired what arrangement was made for putting an 

 ordinary slide upon this stage ? 



Mr. West said it was secured by clips. 



The President read a paper " On the Embryology of Achimenes picta," 

 and illustrated the subject by diagrams. 



Dr. Matthews — who had taken the chair during the reading of the 



