1880.] 



MICEOSCOPICAL JOUENAL. 



163 



two discs, the angular jaws which 

 hold opposite corners of the slide are 

 pivoted (as in Cox's and other forms 



of tables), and it will be seen that 

 by giving rotation to the central 

 wheel under the plate, the jaws 

 may be made to approach or recede 

 at pleasure. 



A coiled steel spring, concealed 

 within to the hollow sleeve, serves 

 to close the jaws,- while a single 

 motion of a milled head upon the 

 sleeve, opens them to their full 

 extent. 



It may be also seen that although 

 the jaws do not approach in a 

 straight line, yet when properly ad- 

 justed, aline joining the pivots of the 

 jaws will cut the centre of the plate, 

 whatever the position of the jaws, 

 and they being always equidistant 

 from the centre, it follows that the 

 slide, when clasped between them, 

 must be perfectly centered. 



For the purpose of retouching 

 old slides the ordinary clip-springs 

 are retained. An improvement in 



the supporting stand claims some 

 attention. In the original " Con- 

 gress " table, the stand was simply a 

 tripod of iron, this being neater and 



more graceful than the block of 

 wood, I have lately arranged the 

 tripod so that the hind legs are re- 

 movable and, be- 

 ing held in posi- 

 tion by a clamp- 

 screw, the same 

 screw serves to 

 clamp the instru- 

 ment upon the 

 edge of the work- 

 table, should this 

 mode of using it 

 bo preferred. 



This table is made only by John 

 W. Sidle & Co., manufacturers of 

 the " Acme " Microscope. 



John W. Sidle. 



LajSTC ASTER, Pa. 



The Third Annual Meeting of 



the American Society 



of Microscopists. 



FIRST DAY. 



The Society convened at 10.30 

 A. M., August 17th, 1880, at the 

 Detroit Female Seminary, 82 Fort 

 St., West, a good attendance of 

 members and a few visitors being 

 present. 



The meeting was called to order 

 by Dr. R. H. AVard, the retiring 

 President, who introduced Presi- 

 dent H. L. Smith, of Geneva, N. Y. 

 Professor Smith briefly addressed 

 the meeting in very well chosen 

 words. 



Mr. E. W. Wetmore, President 

 of the Griffith Club of Detroit, made 

 a few remarks alluding to the great 

 pleasure with which the Griffith 

 Club, a very young society, ex- 

 tended its welcome to a society but 

 little older, yet which it regarded 

 almost as a parent, and he expressed 

 the hope that benefits would result to 

 both societies from this meeting, 

 as well as pleasure to the members. 



Ex-Gov. J, J. Bagley then ad- 

 dressed the Society, welcoming 



