146 BOTANICAL GAZETTE. [ June, 
PRor. rah pone read a eet seep the Linnean co 
“The Gentian ey Queries.” ivides the tw 
great series, ce by the eh of nectarial pra al a 
gradation of forms of the corolla from deeply-cleft rotate to funnel-form. 
e two series are called Perimelitee and Mesomelite. He also consid- 
ered their evolution and geographical distributi tion. 
where Scud who has made him self fon us by his in- 
vestigation of fertilization, has studied Mr. proenne ; ae a 
e genus Cereus. He finds fertilisation, as was to xpected, accom- 
Fs erage in the usual way, through in C, tortuosus the dee en tubes may 
€ as much as three weeks in reaching the o 
THE Bulletin of the Torrey Botanical Club oe May contains “Notes on 
the American species of Marsilia,” by L. M. Underwood and 0. F. Cook. 
Five species are noe pa sith bol sa Hook. & Grev., West Indies and 
uth America; Oa st 4 and onli vas else- 
where; M. Ae ‘Wg ONexs as ew Mexico 
Braun, Louisiana and a Terns M. vestita otook 7 aioe widaly “distributed 
peta te and nect-ooltatees etnicad. He pasar ed pee his re 
searches that in ordinary starch, which turns blue with the iodine ar 
there is but one substance, and that it is alike throughout, the laye 
appearances being due to the varying porosity. Starch which turns red 
iS Acs As ine test has other materials mixed with the true “starch 
pais AS H. CAMPBELL has Joe completed hisstudies in the labor- 
atory of Rersaner cs. and is now un Piefler at sie oe As a resi 
of his work at Bonn, he has peblighed £ in ‘ie Bot. Gesellschaft (Mareb, yee 
a paper “On the development of spermatozoids.” It is accompanied by 
a plate illustrating the subject in such pou as Gymnogramme, 
la, Adiantum, Pellia, Sphagnum, Salvini The results page obtain in 
the use of the very complete fixing and ates ning reagents 
—— and which lie at the basis of so many of his " gstonshing 
THE JouRNAL of the R ontains 4 
valuable summary of the Gs Microscopical Society for mabe c ra eae 
Stages, for keeping organisms at a given temperatur @ while being sui 
id ms W 
sie im sible, € on the life histories of thése organis 
Dr. Byron D. Hatst D has ju Agri- - 
st llet f the Iowa 
ao ae showing the woe pcos Gevuamaseat department. . 
- oh the best we have ever seen , and represents an amount 0 ing. 
one by the professor and his students that is ren surptis o 
ves the eas - work with the students. Some of the subjerr 
ows: Effects of drought upon “grasees and 
of ground; Largest nt smallest leaves (Tilia 
_— nigra) : “Targos tree (etd). Five worst weeds (X@ Xanthiuy 
tic ree is a most ingenious affair, without which ihe ~ 
