3 
r 
q 
. 
The Botanical Gazette 
FA Monthly Journal Embracing all Departments of Botanical Science 
Edited by JoHN M. CouLTer and CHARLES R. BARNES, with the assistance of other members of the 
botanical staff of the University of Chicago. 
2 
Issued January 22, 1910 © : t is 
Vol. XLIX CONTENTS FOR JANUARY 1910 No. 3 
pagar IN OSMUNDA. CONTRIBUTIONS FROM THE aac saanioreaeen LARDERTORY 
32 (WITH PLATE 1). Shigéo Yamanouchi I 
THE DEVELOPMENT OF THE way Pee iad ENCEPHAI see eg silanes PLATE II AND 
IGURE). W. 7. Saxton ‘ 3 mee 
THE ORIGIN OF HETEROSPORY IN MARSILIA. ConTRIBUTIONS FROM THE HULL 
BoTANICAL LABORATORY 133 (WITH PLATES III-VI AND ONE FIGURE). Charles H. Shattuck. 19 
ON THE LACK OF ANTAGONISM BETWEEN CALCIUM VERSUS MAGNESIUM 
AND ALSO ceamckMsmcs ee pad Sack Fagin sila TWO oh eta Chas. 
B. Lipman - - - i SAE 
BRIEFER ARTICLES 
ICROSPOROPHYLLS OF GINKGO. A aed ak FROM THE Pek iigasae 
f 
opeiacoals 134 (WITH PLATE vil). Anna M. Starr 51 
ALTERNATION OF or wane ONS AND SEXUALITY IN Dicryors DICHOTOMA. W. dD, Hoyt 5S 
MickorscHNigue FOR Woopy STRUCTURES. J/rvz . Bailey ~ . 57 
VIVIPARY IN TILLANDSIA DENGTROLAE L, (wirH Site ryiuen: gor W, Penlies - 59 
— beekiadal sponse ‘Scimae 
- - - - - - : - - - 60 
STUDIES IN FOSSIL BOTANY. THE MUTATION THEORY ‘ 
MINOR NOTICES - - - : - - - - - - - - ‘ * ~@2 
NOTES FOR STUDENTS - - - - - - - - - - - - ee | 
Botanical Gazette is published monthly. [The subscription price is $7.00 per year; t 
of hag copies is 75 cents. {[ Postage is pense by the publishers on all orders from the Unica. States, 
Mexico, Cuba, Porto-Rico, Panama Canal e, Republic of Panama, aenereiog ar ois Philippine eens 
Guam, Tutuila (Samoa), Shanghai. qPosta ae is charged extra as follow r Canada, 35 ce 
annual subscription egsca fi. 3 35), on single copies, 3 cents (total 78 conta | ts a other countries § nage elie 
Postal Union, 84 cents on 1 subscriptions (total $7.84), on single copies 11 cents 1 86 cents). 
7: 
Eq Remittances anoala be sade Sayinte to The University of Chicago Press, and should be iin Chicago or 
New York exchange, postal or express money order. If local check is used, 10 cents must be added 
‘or ‘splice tion. 
William Wesley & Son, 28 Essex pele See, London, are appointed sole European agents and 
are authorized to quote the Ibo ie Yearly subscriptions, including postage, £1 12s. 6d. each; 
4 single copies, including postage, 3s. 6d. 
ims for missing numbers eae - made within the month following the regular month of publi- 
7 Claim, 
cation. The publishers expect to supply missing numbers free only when they have been lost in transit. 
Business correspondence should be addressed to The University of Chicago Press, Chicago, Ill. 
Communications for the editors should be rahe to them at the University of Chicago, Chicago, Ill. 
butors are requested to write scientific and proper names with particular care, to use the metric 
pee of ada and measures, and in citations to ‘follow the form shown in the pages of the vabigerencee 
ETTE, 
“Pa apers excess of thirty. -two printed pages are bt oes unless the author is willing to pay the : 
cost of the adaitiona pages, in which case the number of pages in eased 
ons are furnished without oe to author only when suiteitd oe are e supplied. Ac we 
the igysitions made in the y number, 1907, will be sent on rage cation. It is advisable to 
ffer 
' uar 
confer with the editors as to illustrations required in any article to be oO 
tes, if desired, must be ordered in advance 1 cai tion. ou -five separates of original 
: nty~ 
articles without covers will be supplied gratis. é table showing approximate cost of ag nal separates 
is printed on an order blank which accompanies ng ay a copy will be sent on reques 
: Entered August 2r 1896, at the Post-Office at os as second-class matter, under Act of ne March 3, 1879. 
