39 
pls. 1-29+f. 1-5. Trenton, 1911.)—This contribution to Cre- 
taceous paleobotany is largely a compilation of previous work 
by the author and those who preceded him in the investigation 
of the Raritan flora, although descriptions and figures of a few 
new species are included in it. About 100 of the 128 plate figures 
of fossil plants are reproductions of figures in Newberry's Flora 
of the Amboy Clays, the type specimens of which are in the 
museum of the New York Botanical Garden where, the author 
gracefully states, they are well arranged and easily accessible.” 
Numerous incidental references may also be found to other type 
and figured specimens in the museum, collected by Dr. Arthur 
Hollick in Long Island, Block Island and Martha's Vineyard. 
Although it adds but little that is new to science, as a handy 
reference work to the flora of the Raritan formation in New Jersey 
it is useful, especially as many necessary corrections in nomen- 
clature have been brought down to date. Unfortunately, how- 
ever, the work is seriously marred by innumerable typographic 
errors and other lapses due, apparently, to careless editing.— 
ARTHUR HOLLICK. 
Mechanism favorable to insect pollination in cruciferous flowers 
is discussed in Nature (September 21) under a criticism of a 
recent German book by Giinthart. Crucifers generally show (1) 
petal claws which ''bend away from the lateral stamens as if to 
leave definite ‘entrance slits’ to the assumed nectar-containing 
pouches of the lateral sepals’’; (2) the anthers of the longer sta- 
mens are commonly twisted on their filaments so as to face round 
toward the adjacent lateral ones, as if with the intention of rubbing 
the entering proboscis of an insect; (3) the edges of the filaments 
are frequently extended into elaborate appendage growths which 
are apparently intended to guide the proboscis of the insect 
visitor to the secreting surface.—]. B. 
MENDELISM. (Professor R. C. Punnett of the University of 
Cambridge. Published by The Macmillan Company, New York. 
I2mo, price by mail $1.38.)— The third edition of Punnett's 
treatise on Mendelism has recently appeared. This volume gives 
