54 PROCEEDINGS OF SOCIETIES. 



the head of a boy's thigh bone, which had come away from the patient 

 after three years' suffering from scrofulous disease of the hip-joint ; 

 and a large portion of the shaft of the tibia of another boy, whose leg 

 was injured by a kick whilst playing at football. In both cases a most 

 successful cui-e had been effected under the sui'gical care of his friend, 

 Dr. Wm. Price, of Margate. 



Mr. Gushing exhibited a series of three selenite plates superposed 

 on each other, and revolving at different speeds, capable of giving 

 remarkably beautiful combinations of colour in conjunction with the 

 polariscoj)e, arranged by IMi-, Becker ; and read a carefully-composed 

 paper "On the Polarization of Light, and the Methods of employing 

 it in connection with the Microscope." The concluding paragraphs 

 of it elicited some observations from the President on the value of 

 having the polar axis of the selenite marked on the plate, as a means 

 of determining the direction of tension of muscular fibre and other 

 objects examined with it. 



Mr. Gushing kindly presented to the library of the club a treatise 

 " On Polarized Light," and " On the Use of the Oxy-hydrogen Micro- 

 scope and Polariscope," by Mr. Ghas. Woodward, F.E.S. 



The thanks of the meeting having been given to Mr. Gushing, 



The President next directed attention to Dr. Matthew's recently- 

 invented turn-table, for making and varnishing cells, which, by an 

 arrangement on the principle of the parallel rvde, keeps the slide, 

 whatever may be its diameter, perfectly concentric, and also admits of 

 two cells being formed on the same slide if required. He also exhi- 

 bited a pretty and portable microscope lamp, by Moginie, of 85, 

 Queen Square, Holborn. It was packed in a tubular case, like that of 

 a j)ocket folding telescope, and had the great advantage over a some- 

 what similarly fitted but much more expensive lamp, that, whereas the 

 latter could only be carried in a vertical position without the oil 

 escaping, Mr. Moginie had, by a simple contrivance, secured his lamp 

 from leakage, even if tui'ned bottom upwards. 



Mr. F. Baldiston sent to the meeting some scorpions and an enor- 

 mous spider from the West Indies, which, had been received from Mr. 

 John Gibson, of Ganning Eoad, Addiscombe. The President made 

 some interesting remarks on the stinging powers of the scorpion, and 

 the nature and influence of its poison ; and described some observa- 

 tions made by Mr. Frank Buckland and himself on the effect produced 

 on a Gallago, by scorpion poison, and read a laughable account by 

 Mr. Buckland of a fight between a scorpion and a mouse. 



The following members exhibited sections of bone in illustration 

 of Dr. Strong's paper, and other objects, with their microscopes : — 

 Messrs. H. Lee, P. Crowley, T. Gushing, H. Long, G. Bonus, E. T. 

 Jones, F. West, jim., G. W. Hovenden, J. D. Wood, H. McKean, and 

 Dr. Strong. 



Mr. Harry Townend, of Cheam, was elected a member of the club. 



At the monthly meeting of this club, March 15th, Mr. J. S. John- 

 son, M.R.G.S., read a paper on " A Microscopical Examination of the 

 Oyster." He went over the ground to be met with in most treatises 

 on the subject of mollusca, and finally described various interesting 



