356 THE AMERICAN MONTHLY [Nov 



EDITORIAL. 



Laboratory. — The best equipped and most complete 

 bacteriolog"ical laboratory on the Pacitic coast is owned and 

 conducted by Prof. S. M. Mouse r, at 707 Bush street, San 

 Francisco. Professor Mouser has devoted many years of 

 his life to the study of this comparatively recent, but rap- 

 idly g-rowing- science. He has secured all the latest instru- 

 ments and scientific appliances, and is constantly in 

 receipt of all the important pathog^enic bacilli cultures for 

 experimental, teaching- and therapeutic purposes. It is 

 g-ratifying- to note that the Professor's labors are appre- 

 ciated, notwithstanding- that many of our ancient confreres 

 are still scoffing- at the science. Besides being Professor 

 of Bacteriolog-y and Patholog-y in the Colleg-e of Physicians 

 and Surg-eons of San Francisco, Dr. Mouser daily conducts 

 larg-e private classes in bacteriolog-y and patholog-}' at his 

 laboratory, asw^ellas doing- private analytical work for the 

 profession on the coast. 



The Danger from Bovine Tuberculosis. — Dr. W. L. 

 West of Ellsworth, Me., has reported to Dr. G. H. Bailey 

 that two children of a man named Luther Bridges have 

 recently died of tuberculosis, due to drinking- milk from a 

 cow which was found, when killed, to be the subject of 

 extensive tubercular disease, localized in the udder. Five 

 of Bridg-es' nine children are suffering- from pulmonary 

 tuberculosis and several are now, according- to the report, 

 fatallv ill. 



MICROSCOPICAL APPARATUS. 



Micrometer Rulings. — On May 21st, 1897, there was ex- 

 hibited before the New^ York Microscopical Society a very 

 simple piece of mechanism for producing- fine rulings on 

 glass. The inventions hitherto emjiloyed for this pur- 

 pose have been elaborate and costly, while on this article 

 from the labor of an ordinary machinist the cost was less 

 than live dollars. To rule lines accurately up to fifty 



