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tista that have a “vegetable tendency.” Those without a cell 
nucleus, including many of the Cyanophyceae, under the name of 
Chromaceae begin the family tree. We can give here only the 
main lines of ascent, as the work is an abstract itself, and to further 
abstract it would out-Herod Herod. Through the Chromaceae the 
Algariae are reached in Palmella, from which Diatoms and Des- 
mids diverge and represent radiating extremes of development in 
their respective lines. The Algetten, the second main class, in- 
cludes many forms hitherto reckoned under the care of the zodlo- ° 
gists; many of the flagellate infusoria for instance. It includes all 
those single cell forms that have zoospores and flagellae move- 
ments: Luglena, Protococcus, Peridinium, Volvox, Botrydium and 
Caulerpa are included in order. 
The fourth chapter treats of the Protozoa, already reviewed by 
the zodlogists in “Science.” 
The fifth chapter takes up the general morphology of the 
Metaphytes or those plants which are many-celled and tissue 
builders, including (a) Thallophyta, (b) Diaphyta, (c) Antho- 
phyta. This chapter we consider the finest in the book and can 
be read by all botanists to some advantage independent of their 
interests, morphological, systematic or physiological. Chapters 
six, seven and eight take up the three classes respectively. 
The Thallophytes ascending through the Chlorophyceae, Proto- 
coccus to Confervales and branching in several directions; the 
Florideae, the highest branch, through Bangia ; Fucus, through 
Ectocarpus and Laminaria. The Characeae a special branch 
through Nitella, The Ulvaceae to the form similar to Riccia and 
from them to chapter seven on the Diaphytes. Among the Thal- 
lophytes the fungi are represented as on offshoot from the Chloro- 
phyceae, which is hardly tenable after Professor Farlow’s well- 
founded suggestions upon this group, and the lichens are regarded 
_ in the Schwendenerian sense. 
The Diaphytes include the Hepatics and Mosses. These are 
made to arise through a primitive Riccia, from thence through 
Pellia to the foliose forms and to Haplomitrium when a true axis 
is first reached and forni this, through Sphagnums and Andreaceaé 
or their common ancestor to the true mosses. Marchantiales and 
Anthoceratales are made blind alleys of growth. 
