1896.] Current Literature. 241 
tempt is made to present the modern view of the pollen-grains and 
ovules, as these sentences will show: 
“These correspond, though of the other sex, to the macrospores 
which we have found the pistillate flowers to produce, and they are 
called microspores, in flowering plants called pollen-grains.” 
“If as in the alder, pistillate lowers and staminate flowers, or, other- 
wise stated, spores of both sexes, are produced by the same plant, it 
1s Moncecious. 
The following account of the morphology of the anther, as well as 
the succeeding quotation regarding the pollen-grain, seem to indicate 
that the author has scarcely understood the homologies involved. 
“Its origin from the leaf assumes the curving forward and inward 
of the margins of the blade to become attached to the face of the mid- 
nb, producing two thecze, and the production of a secondary or “false” 
partition separating each theca longitudinally into two locelli.” _ 
“The pollen-grain consists of a highly hygroscopic mass of tissue, 
partly vital and partly nutritive.” 
The excellent illustrations, new, accurate, and. clear, deserve high 
Praise. Had they been numbered in type and an explanation or at 
ltast the names of each been given, it would have been a decided im- 
provement. 
Dr. Jeliffe’s “outline of practical plant anatomy,” as one title page 
aalls it, is a greatly condensed account of the tissues, classified essen- 
ly as by Tschirch in his Angewandte Phlanzenanatomte, and illustra- 
ted by many cuts from that work. It is difficult to see how one who 
“0 Write thus about the cell wall and the vacuoles can be fitted to 
"spare even an outline of plant histology: 
ee tning membrane is called the cell wall. It is oe sen: dlaghn 
Youngest many one-celled plants, as yeast, nor is to Pete pee 
tote wy growing parts of the plant, as in the apices 0 
“Atter ¢ = the immature pollen-grains.” _ vai ie tani ate 
P Nea . cells commence to grow portions 0 : e ye bs speek 
inj,” ~ ‘3 the building up of the plant, and small vacu Pp 
i ritles and other spaces left by the retreating protoplasm.” 
to . ne difficulty is increased when we find him defining “respita- 
'Y lssues” as “those which enable the plant to take in food from the 
“mosphere in the form of carbon dioxide and to give off oxygen and 
"Y Vapor.” 
be the authors’ work is faulty in many particulars it is not a 
Paper any in which the publisher's is what it ought to be, if we a 
loadea The clumsy binding, the old brevier type in double apne 
rs with capitals, the cuts numbered in two series while ! i 
tor are Numbered consecutively, and the want of an index conspl 
"Pel further acquaintance. 
