2o THE MICROSCOPE. 



THE advertisements in a journal are its very life. Without them 

 this journal — and all others, too — would have to close its 

 accounts. It is a favor to us and also to our advertisers if you 

 will mention this journal when you write for their catalogues or 

 goods. Then read our advertising pages. 



OUR readers will remember that the last number of this journal 

 was conducted entirely by the junior editor. She has received 

 hosts of letters congratulating her on its appearance and some of 

 them mildly suggesting that "the senior editor had better resign." 

 Is it possible that married men could give such advice! 



WE CALL attention to the new page advertisement of W. S. 

 ■\\ T oolman. His goods are first-class, hence we are very glad 

 to have him with us. He will send catalogues to those who desire 

 it and will sell you a microscope " cheap for money." The atten- 

 tion of draughtsmen is called to the fine stock of drawing instru- 

 ments kept by this house. 



Edison has constructed for Prof. Fairfield of the New York 

 College of Veterinary Surgeons an electric lamp which makes a 500- 

 candle power in the area of a half-dime. The electrodes or carbon 

 points are only one-tenth of an ifich in diameter, the object being to 

 obtain the highest intensity within the smallest possible space. It 

 requires a battery of about forty cells. The instrument was made 

 to illuminate a microscopic objective constructed upon the newly- 

 discovered law of homologous sections. — New England Journal of 

 Dentistry. 



The discovery of the plax-scindens in oysters and other shell- 

 fish, now that" this microbe is known to cause scarlatina, awakens 

 fresh interest in the professional mind. The learned and able Dr. 

 Eklund, of Sweden, hints at the possible vaccinal protection against 

 scarlet fever from the introduction of the schizomycetes which he 

 has found in oysters. It would appear strange if the oyster should 

 supply us with .i germ which shall as effectually protect us from 

 scarlatina as that supplied by the cow protects us from the small- 

 pox. — Medical Herald. 



