THE AMERICAN 
MONTHLY 
MICROSCOPICAL JOURNAL. 
Entered at the post-office as second-class matter, 
‘ 
VOL, XXIl. NOVEMBER, 1901. NO, 
CONTENTS. 
Ethmoid Diaphragms. Ordway 287-294 
The Fungi. Massey 295-298 
Extracts from Microscopical Society’s Note—Books.—Eris- 
talis Tenax, Longitudinal Section of Halter; Sarcophaga 
Carnaria ; Anterior Thoracic Spiricle of Blow-fly ; Probo- 
scis of Butterfly... 299-302 
NOTES BY SHILLINGTON SCALES, AND H. A. HAic.—Coloring 
of Water by Micro-Organisms; Bract and Fruit-Scale Coni- © 
ferae; The Structure of the Nucleolus; Thermal Death- 
Pott Grete 303 306 
Microscopical Society’s. eeoval Microscopical Society ase 306-307 
New Publications. —Gage’s Introduction to Microscopic 
ee tn ee a 307-308 
Miscellaneous.—Asplanchna ; Liquid Amber ; Storm Effects ; 
Vaccination ; Carborundum 308-310 
Ethmoid Diaphragms. 
. JOHN M. ORDWAY. 
In some monocotyledonous plants there is a kind of 
tissue of which there is no description in any botanical 
work within my reach. This constitutes the cross parti- 
tions or diaphragms of the air passages extending the 
whole length of the petioles, leaves, or scapes. These 
diaphragms consist of one layer of flat, branching cells 
which join together so as to leave triangular, square, or 
Oval apertures allowing easy communication between the 
different compartments of the same longitudinal series. 
If they have not been already named, they may very 
properly be called ErHMorp diaphragms,—from Ethmos, 
a colander. 
Good examples are afforded by the tropical banana 
plant, Musa sapientum. Fig. 1 shows a cross section of 
