226 



The thanks of the meeting were voted to the donor. 



The Secretary said it had often been found a matter of inconvenience 

 when live objects were brought by members for distribution, that others 

 wore unable to take them home on account of not being provided with 

 bottles. lie had therefore asked the attendant to provide a supply of 

 bottles, which members could purchase, if required, for l^d. and 2d. each. 

 Some small boxes for slides could also be obtained from him on similar 

 terms. 



Mr. C. L. Curties exhibited and described two new microscopes by Zeiss, 

 one of which was furnished with a centering stage, rack and pinion to the 

 condenser, and a clamping screw to the fine adjustment, by means of which 

 it could be thrown out of gear and so saved from risk of injury whilst 

 travelling ; the other was mounted upon a triangular brass bar, which could 

 be raised or lowered so as to alter the height of the body. It was also fur- 

 nished with an iris diaphragm with ten leaves. 



Mr. Curties also exhibited to the meeting some remarkable photo- 

 micrographs of Pleurosigma Angulatum and Amphipleura Pellucida, taken 

 by Dr. Roderick Zeiss with the new apo-chromatic objectives. 



The President hoped the members would examine these photographs after 

 the meeting, as they were certainly amongst the most remarkable yet pro- 

 duced, certainly showing both longitudinal and transverse lines on Pellucida, 

 The iris diaphragm was also worth attention. 



Mr. Karop thought it was a most unfortunate thing to have added that 

 very rough method of raising the body of the microscope. He could not 

 see at all what was the good of it, and it would be sure to (t wobble " after 

 it had been a short time in use. 



Mr J. D. Hardy exhibited a simple form of growing slide, in the construe- 

 tion of which he had used one of the ordinary compressors. It was intended 

 as an intermittent slide, since the circulation had to be stopped whilst the 

 contents of the slide were being examined under the microscope. 



The thanks of the meeting were voted to Mr. Curties and Mr. Hardy for 

 their communications. 



Mr. B. T. Lowne gave a resume of his paper " On the Histology of the 

 Muscles of the Fly," which he freely illustrated by drawings on the black- 

 board. 



Prof. Chas. Stewart said he had listened with much pleasure to the clear 

 and lucid manner in which Mr. Lowne had explained his subject, and had 

 laid before them certain views concerning it. For his own part, not having 

 made muscle structure a study for many years past, his knowledge of it was 

 probably somewhat antiquated ; but regarding the subject from the stand- 

 point of his own sub-fossilized views, he should rather have fancied that 

 what had been spoken of as nutrient-plasma was really continuous with the 

 protoplasm on the surface. He should look upon this largely as being pro- 

 toplasmic, and that all the other was but a modification of it. He should 

 also be disposed to think of the complex parts as being derived from a 

 modification of the cell rather than from the nucleus. He thought, too, that 

 this protoplasm was no more nutrient than the other, though it was no doubt 



