J BOTANICAL NEWS. 95 
buried these, so that we find them intercalated in the trap. Vast denuda- 
tion sueceeded, wearing away hills, and leaving only shreds and patches 
for su bsequent times. Then the glacial action of its Post-pliocene age 
transported such silicified trunks as came in the way, wearing and round- 
ing them, and at last leaving them buried up in its clay drift, where they 
are still preserved. 
Hotanical News. 
: ARTIOLES IN BOTANICAL JOURNALS FOR JANUARY. 
Botanische Zeitung.—T. Hildebrand, * On the M of Distribution of 
the Fruits of the Composite.” F. Buchenau, * On the ‘Gemination’ of 
the Flower-whorls in Alismacea.”’ J. Ha nstein, = invehi y Remarks 
"Miller, A FEéphetbinisdtuni Species Nove ” ae 
pe eam Pseudoeroton gen. nov. described). A. Kanitz, ** On Urti 
gifolia, Koch, with Notes on itbie Species of Nettles” (tab. 1). 
F. Arnold, “ Lichenological Fragments." Obituary notice of Ratzebure 
igia.—' Review of T. M. Fries’ * Lichenographia Scandinavica. /» 
German translation of M. C. Cooke's paper on Polymorphic Fungi in 
Pop. Se. Rev. for Jan. 1871. 
We notice the publication of a second fasciculus of Pfeiffer's elaborate 
* Nomenclator Botanicus,’ a second part of Van Heurck’s descriptions of 
inclusive, and a aps fasciculus of Pritzel's ‘Thesaurus Literature Bo- 
ice,’ carrying on the catalogue of wa. to fey 
On the 14th eens at the meeting of the Society of Arts, 
Masters in the chair, Mr. J. Collins, of the Pharmaceutical Society, read 
a paper, “On the Study of Economic Botany, and its claims PoueeHiouails 
and Commercially considered.” The author insisted on e practical 
utility of an acquaintance with the uses of plants, and eisiea that 
two or three hours each week should be devoted in schools to elementary 
vegetable 
by specimens. - He aden to the = of Sir William am Dr. 
of the subject was particularly referred to, and a more systematic effort to 
examine the vegetable products of the globe on the part of our eii 
mm , and an extension of the cultivation of useful 
spec 
We mentioned last month that Prof. Thiselton Dyer had RI the 
