THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL 



Entered at the post-office as second-class matter. 

 VOL. XX. NOVEMBER, 1899. NO. 11. 



CONTENTS. 



The North American Slime- Moulds. With Frontispice 321-330 



Preparation of Certain Special Media, Moore 330-332 



Evolution of Decay. Hart. Illustrated 333-344 



MiSCEi.ivA NEGUS Notes. — Cooke. — Cleaning Diatoms ; Pul- 

 verizing Rock ; Diatom Mounts ; Double Stain; Amoeba ; 

 Yeast Cnltures ; Insect Preservation ; Sponges ; Plank- 

 ton Nets; Plankton Pump; Rubber Stoppers; Hardening; 



Holoscopic Eye-piece 345-348 



Bioi,OGiCAL Notes. — Pammel.-History of a Tuberculous Herd; 

 Bacterical Treatment of Sewage ; Capsule Bacilli in Nasal 

 Mucosa ; Distemper of Dogs ; Plant Protection from Bacteria 

 and Fungi -. 349*350 



The North American Slime-Moulds. 



T. H. MACBRIDE'S NEW BOOK. 



With Frontispiece. 



Professor T. H. Macbride of the State University of Iowa 

 has made a descriptive list of all Myxomycetes hitherto 

 described from North America including- Central America 

 and the MacMillan Company of New York has brought 

 out in a nice octavo volume of 230 pag-es accompanied by 

 eig"hteen plates of which our frontispiece represents the 

 first. The explanation of the plate is as follows : 



Enteridium splendens. ^thalium, natural size, fig-. 1 ; 



a spore X 1400,fig-. 1, a ; capillitium of same X 420, fig-. 1, b. 



Dictydiaethalium plumbeum. ^thalium, natural size. 



