The Microscope. 181 



Arranged Diatoms. — In the April number of this journal 

 we called attention to a slide of arranged diatoms presented to 

 the Junior Editor by Mr. T. 0. Rinnbach, of Austria. Mr. W. 

 H. Walmsley, of Philadelphia, has succeeded in making some 

 photo-micrographs of this slide in a very successful manner. 

 He used a Beck's fds objective, allowing sixty seconds exposure, 

 by lamplight. The print is six inches in diameter, and is cer- 

 tainly remarkable for flatness of field and sharp definition. The 

 print shows 222 diatoms arranged in the most exquisite and ar- 

 tistic pattern. The slide is a marvel of workmanship and the 

 print an exceedingly good one. So taking both together, many 

 of our readers will be glad to get an unmounted copy by sending 

 thirty-five cents to Mr. Walmsley. 



They will all be there. — The man who has nothing to say 

 and is forever saying it ; the man who could write a good paper 

 but was terribly annoyed by a rush of professional business ; 

 the man who has attended every meeting, yet no one knows it; 

 the man who can read his audience to sleep ; the man who can't 

 be told any thing; the man who always has poor accommo- 

 dations; the man who will surely ask you for your annual dues ; 

 and, last of all, the man who tries to run a journal. 



Editorial Notices. — A " press of matter " prevents our Sci- 

 entific Puzzle from devoting over eight lines to our annual 

 meeting. By abbreviating some of the words he could possibly 

 have saved another line. This might have been sold and the 

 proceeds sent to Mr. Cole, of London, for purposes to be described 

 hereafter. 



Section of Microscopy of the A. A. A. S. — We are obliged 

 to chronicle, in this connection, the coming demise of Section 

 G., of the A. A. A. S. As is well known, this Society meets in 

 our own city, the week following our Cleveland meeting. It is 

 also generally understood, that Section G. will hold its last ses- 

 sion at that time. It was weak at birth, but with, careful nursing 

 it promised well, until it took for its adopted father, one who 

 could not live with his own kind. The newly adopted child, 

 however, soon showed signs of relapse, and sank rapidly. A 

 council of eminent men was held, at Philadelphia, a year ago, 

 and the prognosis of "death at the end of another year" was 



