( 551 ) 

 PROCEEDINGS OF THE SOCIETY. 



Meeting of 14th April, 1886, at King's College, Strand, W.C, 

 THE President (the Eev. Dr. Dallinger, F.R.S.) in the 

 Chair. 



The Minutes of the meeting of 10th March last were read and 

 confirmed, and were signed by the President. 



The List of Donations (exclusive of exchanges and reprints) 



received since the last meeting was submitted, and the thanks of the 



Society given to the donors. 



From 



Balfour, F. M., The Works of. Memorial edition. 4 vols. 



(8vo, London, 1885) The Relatives. 



Cheshire, F. R., liees and Beekeeping, Scientific and Practi- 

 cal. A complete Treatise on the Anatomy, Physiology, 

 Floral Relations, and Profitable Management of the 

 Hive Bee. Vol. I. Scientific, viii. and 336 pp., 71 figs, 

 and 8 pis. (8vo, London, 1886) The Author. 



Draper, E. T., Graphic Microscopy, No. 1. 4 pp. and 2 pis. 



(8 vo, London, 1886) The Author. 



Hudson, C. T., and P. H. Gosse. The Rotifera or Wheel- 

 animalcules. Part III., pp. 81-128, Preface and 

 Title to vol. L, pis. 11-15. (8vo, London, 1886) .. .. The Publishers. 



Lubbock, Sir J., Flowers, Fruits, and Leaves, xv. and 



147 pp. and 95 figs. (8vo, London, 1886) Mr. Crisp. 



Rees's Encyclopaedia. 39 vols. (4to, London, 1819) .. .. Dr. Millar. 



Microscope, Apparatus and Slides The late Miss Tucker. 



Slides of Pumice-stone Dr. H. J. Johnston-Lavis. 



Slides ot leaf of Deutzia scabra and seeds of Orthocarpus . , Mr. W. E. Damon. 



Mr. Deby exhibited and described his " Twin Microscope " (see 

 Vol. V. p. 854), which he had improved by the addition of a mechanical 

 finger worked by a small micrometer screw. By this means he was 

 able with the greatest facility to pick up a diatom or other minute 

 object appearing in the field of one Microscope, and to swing it round 

 and place it in any required position upon a slide upon the stage of the 

 other. He thought this arrangement likely to be useful to any one 

 whose hand was not steady enough for such delicate work, as it would 

 enable them to arrange diatoms after the manner of Herr Moller. 



Mr. Crisp said that in this connection might be mentioned tho 

 apparatus devised by M. Inostranzeff for testing the exact colour of 

 minerals. He used two Microscopes placed side by side, one having 

 on the stage the standard object, and the other the mineral to be 

 tested. By means of an arrangement of reflecting prisms the two 

 images were received in one eye-piece, and a comparison readily 

 made. (Supra, p. 507.) 



Mr. Crisp exhibited and described Mayer's new form of dissecting 

 Microscope {supra, p. 507). It was designed by Dr. Mayer, of the 

 Naples Zoological station, and had been very highly commended. 



