170 The Botanical Gazette. [May, 
P ‘ a 
It is not necessary to give a complete bibliography of the 
work done on the subject of symbiosis. References to the 
more important articles can be found in the paper of A 
Schneider.* The principal papers of B. Frank, who hasno 
doubt done more than any other observer on this subject, can 
be found in the Berichte der deutschen botanischen Gesell 
schaft, 1890, 1891, and 1892. : 
Wabash College, Crawfordsville, Ind. 
EXPLANATION OF PLaTes XVI anp XVII. a 
oa I, 2. Base of aeriai and subterranean stems of Cora/lorhisa innate 4 
S.3-9. From Corallorhiza multiflora Nutt. : 5 
Fig. 3. Base of aerial and subterranean stems. Fig. 4. Longisection d 
: 8 
Toot-stock; @, old leaf not yet broken away; 4, c, remains of leaves 
broken away; ¢, papilla with trichomes, g; ¢, axial bundle; /, large cells oo q 
des. X 480. Fi i 4 
taining raphides. 5. lls of cortical tissue, with hyp 
from the tip of the stem where they contain bu v #4, cola ri 
cleu One of the rudimentary bun of the stem; @, gener 
sheath; 6, xylem; ¢, phloem; d¢, fundamental tissue. 
mains of a leaf, a, with trichom:s, 4. X 750. Fig. 8. 
Ss, 75°. Fig.9. Transection of root-stock; @, papilla wi 
chomes; 4, cell with taphides; c, general buudle sheath; ¢, collateral fi 
lar bundle with an unusually regular arrangement. X 480. 
George Vasey: a biographical sketch. 
WM. M. CANBY AND J. N. ROSE.’ 
WITH PORTRAIT—PLATE XVIII. 
gaged in the study of botany; and it is to satisfy this 1 
that these notes are written. 
ee... 
: Rie 6 
"It is proper to state he Mr. Canby 
: re that ‘Dr. Vasey had requested Mr. © 
=e cera of his life and the Editors of he GazeTTE ce knowing 
a. My relations with i imate 
ae ~ Mr with Dr. Vasey, while most intimate, ~orres} 
go hereas Mr. Canby has enjoyed an acquaintanceship 
of more than 30 years.—J.N.R c 
