TRANS. N. S. INSTITUTE SC., VOL. X. PLATE IV. 
Photograph by Dr. A. H. MacKay. 
TRANSVERSE SECTION OF VASCULAR BUNDLE FROM CORE 
OF STIGMARIA. 
Magnified 16 diameters. 
(TO ILLUSTRATE PAPER BY MR. POOLE. ) 
Face p. 346. 
