1899] MICROSCOPICAL JOURNAL. 59 



tions obtained are simply those of details of the image 

 which has been brought about by diffraction in the first ob- 

 jective and therefoie there cannot by any possibility be a 

 single detail added, While the details that the accurate im- 

 age does disclose must be blurred and tortured tenfold 

 more than when subjected to the legitimate action of well- 

 constructed eye-pieces. Professor Gates' apparatus is a 

 perfected form of Lenal's apparatus which was pushed 

 out of sight by scathing criticism. Science-Gossip for Jan- 

 uary reproduces our illustration of Gates' apparatus and 

 makes the above statements regarding Lenal's apparatus. 



Very Noncommittal.- -I have been exceedingly inter- 

 ested in Gates Double Microscope, and feel that it is a 

 matter of such importance that one should not give an 

 opinion at once, for while it seems to be contrary to some 

 accepted ideas, other things of the same character in the 

 past have proved to be most valuable discoveries. Time 

 and experience alone can demonstrate the value of this 

 plan which is certainly unique. — Henry B. Ward. 



EDITORIAL. 



The Journal of 1899 will be a 32-pp illustrated magazine 

 devoted to Microscopy in all phases and applications. The 

 general panic of two years ago in which nearly all the per- 

 iodicals devoted to this subject went down has subsided 

 and the outlook for 1899 is such that we expect to publish 

 the best Microscopical monthly that has been seen in the 

 United States and to have the aid and sympathy of all mi- 

 croscopists. The price is $2 but those who are prompt 

 to pay can deduct 50 cents therefor. If any of your back 

 numbers are missing it is well to get them at once. The 

 friends who received the Journal in 1898 and do not in- 

 tend to pay for 1899 should give immediate notice, and re- 

 fuse to take it from the mails unless marked sample copy. 



Yeast. — .Yeast may be ground up with quartz sand 

 for the purpose of disrupting the cells and subsequently 

 submitted to the high pressure of 500 atmospheres. This 



