222 



The Secretary said it would no doubt be remembered he had 

 announced at a previous meeting that two nieces of the late 

 Mr. J. Gr. Tatem had presented the Club with 1,000 slides of 

 insect preparations in memory of their uncle. These had now 

 been received, and the cabinet containing the slides was before 

 the members in the room that evening. He felt they were 

 greatly indebted to the Misses Harman for this very handsome 

 donation. 



Mr. C. L. Curties said the slides were preparations of the 

 kind usually made by Mr. Tatem — entomological specimens 

 and dissections — selected from a total number of about 3,000. 



On the motion of the President a hearty vote of thanks was 

 unanimously passed to the Misses Harman for their gift. 



The President said there was at present no catalogue of these 

 slides, but if anyone would volunteer to make one it would be 

 rendering a very useful service. 



Dr. Tatham exhibited a device for rendering the stereo- 

 scopic binocular microscope available for dissecting purposes, 

 the advantage of which would be at once obvious. A brass 

 ring with a plate formed a supplementary stage sufficiently 

 large for the purpose. 



Mr. Rousselet inquired if the principal stage could be re- 

 moved so as to facilitate getting at the other. 



Dr. Tatham said that this was hardly necessary as it could 

 be got at quite readily. 



Mr. Michael said he had very considerable experience in 

 dissecting with the binocular, but the instrument before them 

 would, he feared, be practically useless to him, owing to the 

 fatal objection interposed by the principal stage which would 

 block out the light and interfere with the hands, and for dis- 

 secting purposes the stage provided was inconveniently small. 

 He entirely agreed with Dr. Tatham that a binocular must be 

 used if there was much work to be done, but it must of neces- 

 sity be used upright, and that meant a craning of the neck 

 which was soon felt to be irksome. All this was avoided by 

 using the Stephenson form, with which the head could be up- 

 right and the stage at the same time flat, but what was really 

 wanted was a means by which they could dissect under a ^in. 

 in the case of delicate dissections. It was of course a great 

 improvement to be able to use a binocular of this kind for dis- 



