112 THE AMERICAN MONTHLY [Apr 



the lactiferous ducts of cows found that nineteen udders 

 examined harhor bacteria throughout their whole extent. 

 Milk when secreted by the glands of the healthy udder 

 is sterile, but it may soon become infected by the bacte- 

 ria which are normally present in the smaller milk ducts 

 of the udder. The bacteria so far found are not injurious. 

 Certain "dairy bacteria" in milk may be explained on this 

 constant contamination. 



Notes on Microscopy. 



F. SHILLINGTON SCALES, F.R.M.S. 



The Quekett Microscopical Club. — The good work 

 done for a generation of niicroscopists by the Quekett 

 Club, the very name of which ha« a grateful sound in the 

 ears of all ardent lovers of the microscope, requires no 

 mention here. There are several late things of interest 

 amongst them being a paper by Mr. C. D. Soar on a water 

 mite that he believes to be a new species, and which he 

 proposes to name Atax taverneri, and another paper by 

 Mr. R. T.Lewis on some Australian ticks, each being il- 

 lustrated by a well-engraved plate. Dr. M. C. Cooke, 

 writes on "Early Memories of the Q. M. C." He traces 

 the intimate connection that existed between the Club and 

 Science-Gossip. Mr. Cooke calls attention to the work 

 done by the late Robert Hardwicke as a publisher of scien- 

 tific books at hig house in Piccadilly, from whence issued 

 the "Popular Science Review," and the third edition of 

 Sowerby's "English Botany." Mr. Cooke was a daily 

 visitor to the little shop in Piccadilly, and suggested that 

 there was a good opening for a cheap monthly magazine 

 devoted to natural history and microscopy, with facilities 

 for exchanges and copious notes and queries. The idea 

 was entertained eagerly, and Science-Gossip appeared 

 January 1st, 1865, and became at once a success ; in fact, 



had no competitor. Once a week, Mr. Cooke, Mr. Ket. 

 teringham, and his friend, Mr. W. M. Bywater, used to 



