56 The Miceoscope. 



animal organism and gives rise to the " foot and mouth disease." 

 There are a few cases on record of its being transmitted to man, the 

 disease being called " actinomycosis," affecting the tongue, glands 

 in the neighborhood of the lower jaw, and, being metastatic, sets up 

 abscesses in the lungs, liver, etc. 



Prof. Jno. F. Cowell read a technical paper on " The Fertiliza- 

 tion of Plants." He illustrated on the blackboard the difference in 

 the sexual organs of the different orders of plants and the methods 

 by which each was fertilized. 



A memorial to Dr. L. M. Kenyon and Dr. A. M. Barker was 

 presented by a committee and adopted by the Club. Both these 

 gentlemen were old and honored members of the Club, and in their 

 decease the Club loses true friends and willing workers. 



L. A. Bull, Secretary. 



THE LOUISVILLE MICROSCOPICAL CLUB. 



IX/TEETING, Tuesday, November 29 : The President, Rev. C. J". 

 -^ ^ -*- K. Jones, in the chair. Prof. E. H. Mark gave the first 

 talk, his subject being "Angular Aperture, a formula for its 

 determination and the best angles for lenses for ordinary work." 

 While the professor had not much more than begun his investigation 

 of the subject, his talk was very instructive. He promised a paper 

 bearing on the matter at an early date, when I hope to give your 

 readers a full report. 



Meeting, Tuesday, December 13 : The President in the chair. 

 The paper of the evening, " Typhoid Bacilli, and a report of their 

 detection in water obtained from spring ice," was read by Mr. Simon 

 Flexner. The discussion which followed had reference to bacteri- 

 ology in general. The question raised by Dr. Minot, in his letter 

 to Science, on "American Microscopes," was discussed. The 

 opinion of the Club was largely in favor of American stands and 

 objectives. Some photographs of Amphipleura pelhicida, made by 

 Dr. Ditmers with Spencer's -^^^ -inch objectives, were exhibited. One 

 of the photographs was from a negative in which Amphipleura was 

 shown resolved by plumb central light. 



Simon Flexnek, Secretary. 



