152 



NEW PUBLICATIONS. 



''Memoranda of Plants collected by the 'Coquet' in 1856." Bv I) 

 Oliver, jnn. '' 



Vol IV. " Notices of Remarkable Trees in Northumberland." Bv the 

 Eev John F. Bigg-eM.A.-" Notes on Plants new to the Flora of 

 Northumberland, with Observations on some Critical Species." Bv Daniel 

 Ohvei-, jnn., F.KS.-" Catalogue of the Marine AlgaB of Northumberland 

 mid Durham. By George S. Bradley. With Plate.-" Remarks on some 

 New Microscopic Algae." By Tiiffen West., F.L S With Plate 



Vol. y. '.'Effects of the Severe Winter of 1S60-1 upon Evergreen 

 Vegetation in Nort lumberland." By Ralph Carr, Esq.-" Notes on the 

 Botany of the South Durham Ballast Hills in the Year 1861 " Bv the 

 Kev Alfred Merle Norman, M.A.-" Notes on the Species into which 

 tlie_ Linnean Polygonum aviculare has been divided bv Continental Bo- 

 l-"!!'^, ?.>^^ '^^,e^• Alfred Merie Norman, M. A.— "Notes on the Flora 

 of the Old and West Hartlepool Ballast Hills, with a List of the Rarer 

 aiKl more Characteristic Species." By M. A. Lawson, B.A., Trin Coll 

 Cambridge. " 



Vol. VI. "Notes on Plants collected during the Meeting of the British 

 Association 1863." By J. G. Baker. Contains Notes on the Rubi of 

 t^ie /y"e Province -" On Proliferous Cones of the Common Larch." 

 By John Hogg, M.A., F.R.S., etc. 



Sctof |1uMrcafrons. 



I>endrologie. Baun>e Slniucher and Halbstrducher, weMe in Mlttd- und 

 Noid-Europa z« Freien kulhvirt werden. Von Karl Koch, Med. et 

 I'hil. Dr. Erster Theil. Erlangen. 1869. Pp.735. 



Professor Karl Koch has l)rought to the publication of this very useful 

 work a good deal more than the industry of the mere compiler. He is well 

 known to have been long occupied with the origin of our cnltivated fruit- 

 trees ; and no more important inquiry could be suggested to a critical 

 worker nor one more likely to produce information available for other 

 studen s besides geographical botanists. For four years the author travelled ' 

 11 western Asia, during which time he was always on the look-out for any 

 plants which could be identified with the wild originals of cultivated 

 forms. A short paper read before the British Association gave a resume 

 of his principal results, and concluded with a promise which the publica- 

 tioii of the present volume has in part fulfilled. We have so far the whole 

 ot the cultivated arborescent Fohjpetalce, which are able to adapt them- 

 selves to the climate of North and Mid-Europe. To what eient the 

 mihappy distractions which have produced lamentable hiatuses in so 

 many fields of scientific research will postpone the publication of fresh 

 instalments must be a matter of uncertainty ; but it is to be hoped that 

 u-e shall not have to wait long for the conclusion of a work which will be 

 the standard authority in its subject. 



It will be interesting to give Dr. Koch's opinions upon a few points. 

 Of the Pear section of the genus Pyrus, six species are enumerated — 



1. PyrusJcJirm,^^,i,^ (the name P. communis, L., is passed over on 

 account of its including cultivated forms). Wild in China 



