Bibliographical Notices. 321 



the conchologist. Under Lima and Area there are remarks equally- 

 attractive ; and lastly, we find the author of opinion that the Unio 

 Roissyi is merely one of the variations of U. rnargaritifera. 



This brochure is a specimen of a more extensive work which we 

 hope the author will prosecute and complete : we must bargain, how- 

 ever, for better plates. 



Archiv fur Naturgeschichte. In Verbindung mit mehreren Gelehrten, 

 herausgegeben von Dr. Ar. Fr. Aug. Wiegmann, Professor an der 

 Friederich Wilhelms-Universitat zu Berlin. Viertes Jahrgang. 

 Erstes Heft. Berlin, 1838. 



As this is the first occasion of mentioning this journal in our pages, 

 we shall take the opportunity, before noticing the contents of the 

 present part, to inform our readers of the general tenor of this work. 

 Its plan resembles our own except in one point, namely, in the an- 

 nual Reports on the progress of the various branches of natural sci- 

 ence which it contains, and which are of the greatest value to all 

 naturalists. The zoologist finds notices of all the works which have 

 appeared in any country on zoology, with short criticisms ; also every 

 new species, and generally with the characters, giving him much of 

 the information which is most essential. The lover of vegetable phy- 

 siology will find in the valuable reports of Prof. Meyen the various 

 labours of physiologists, and the conclusions to which they have 

 come, criticized and compared with each other ; so that without the 

 necessity of consulting works, many of which are extremely expen- 

 sive, he may be sufficiently informed with regard to the objects of 

 his pursuit to know generally what has been done, and not to ima- 

 gine he is making discoveries merely because he is unacquainted with 

 what others have accomplished ; whilst in regard to those subjects on 

 which further information may be desired, the sources from whence 

 it may be obtained are carefully indicated. We cannot too much re- 

 commend these reports to our countrymen, as the labours of foreign 

 naturalists are from various causes too tardily and imperfectly known 

 here ; and as they are the productions of persons well known to the 

 scientific world as being well qualified for the task of preparing them. 

 The zoological report is drawn up by Prof. Wiegmann ; that on 

 helminthology by Dr. v. Siebold ; on entomology by Dr. Erichson ; 

 on palaeontology (Petrefactenkunde) by Dr. Quenstedt ; on vegetable 

 physiology by Prof. Meyen; on phytochemistry by M. Marquart of 

 Bonn. Of these, Meyen's report for the year 1836 has been trans- 

 lated in part, and Marquart's on phytochemistry for 1835 entirely, 

 and are to be found in the Philosophical Magazine. On account of 

 Ann. Nat, Hist, Vol.1. No. 4. June 1838. y 



