1895.] Botany. 275 
hundred) should place them in every high school in Maine, as well 
as in the herbaria of many of the agricultural colleges in other states. 
Professor Penhallow, of Montreal, Canada, has prepared a “ Type 
Series of North American Conifers,” consisting of microscopical sec- 
tions of the wood, stained, and mounted in balsam. Each species is 
represented by transverse, radial and tangential sections. The series 
contains 264 slides and is sold at $120.00. It is the outgrowth of 
studies made by Professor Penhallow upon North American Conifers 
looking to a classification based upon the anatomy of the wood. The 
results of these studies are to be published shortly, and will add to the 
interest of the prepared specimens. 
We have already noticed A. H. Curtiss’s “Second Distribution of 
Plants of the Southern United States,” of which Series I and II are 
now ready. (February NATURALIST). 
Fascicle I of Arthur and Holway’s “ Uredinez Exsiccatze et Icones ” 
gives promise of being a most valuable addition to the carefully studied 
sets of plants now offered to botanists. The specimens are excellent 
and the drawings very carefully made. A feature which is to be com- 
mended is the uniform magnification throughout the series. In the pre- 
sent fascicle seventeen species, are represented by thirty-one specimens 
and one hundred and thirty-five figures. When supplied in loose 
packets the cost is to be three dollars per fasicle, when in bound vol- 
umes, fifty-cents more. 
Many botanists have in the past few years received the neatly pre- 
pared sets of lichens sent out by ©. E. Cummings and A. B. Seymour 
under the title of “ Lichenes Boreali-Americani,” of which about 150 
numbers have been received. Hereafter T. A. Williams will aid 
the editors named above. This distribution has been so well patronized 
that a second edition has been prepared. 
Professor Underwood’s “ Hepatice Americanz,” constitutes the only 
recent set of North American liverworts. Although no specimens of 
this distribution have been received for some time we trust that it isto 
continue. 
The distribution of North American Characez (“ Characeæ Amer- 
icanæ Exsiccate”) by Dr. T. F. Allen, of New York City (No. 10 
East 36 St.) possesses unusual value, since it probably represents more 
than any other the immediate results of a critical revision of the species. 
A recent fascicle contains twelve species mainly of the genus Nitella. 
With these American species there were distributed seventeen Japanese 
species and varieties under the title of “ Characeæ Japonice Exsiccat,” 
