170 
as a mere genus of mosses, but may better be taken as a distinct 
class; in the treatment of Pteridophyta no mention is made of 
the two well-marked series of Homosparz and Heterospore, and 
on page 236 the word Filicine is misspelled so as to remind one 
‘strongly of Catnip. 
The illustrations are generally good, though some of them 
will not bear close examination. They have one very great 
recommendation—they are all new, the borrowing photo-engrav- 
ing process not having been invoked in the preparation of this 
text book ! 
Evechtites hieracifolia—C. G. Lloyd. (Drugs and Medicines 
N. A., ii., pp, 126 et seq., one plate and illustrations.) 
Fresh-water Alge of the United States—Francis Wolle. 2 vols., 
8vo., 157 plates; price $10. 
This work, which has long been looked for with interest, is 
now completed and ready for issue. It supplies a long-felt want, 
for Wood’s Contribution, the latest American work on this sub- 
ject, was published about fifteen years ago, and described all the 
then known Algz—only about 375 species. Mr. Wolle’s new 
work embraces 13,000—all the species of this country known up 
to the present time. The first volume contains the text, and the 
second the plates. These are all colored by hand and contain 
over 2,000 figures. The volumes correspond in size, press work 
and plates with the author’s “‘ Desmids of the United States,’’ to 
which the work is complemental. The price may seem high, but 
remembering the number of plates and the comparatively small 
demand for a work of the kind, hence the necessarily small edi- 
tion, it is really very low, low even as compared with a recent 
‘work on British Fresh-water Algz, which sells for $22.00. 
Guatemala.—Undescribed Plants from.—I. J. Donnell Smith, 
(Bot. Gazette, xii., pp. 131-134.) 
This is the first installment of descriptions of new species and 
varieties of plants from the collections of Mr. H. von Tiirckheim, 
a resident botanist of Coban. Vochysta Guatemalensis, Hamelia 
calycosa, Ardisia pectinata, Myriocarpa heterospicata, Nephro- 
dium Tuerckheimii, and N. Fendleri, Hook., var. paucipinnatum 
are described. 
Life History of the Diatomacee—A Contribution to the-—H. L. 
