Report of the British Association, 519 



REVIEWS. 



Art. I. Titles of Works on Subjects of Natural History, published 



recently. 



The British Association for the Advancement of Science : Re- 

 port for 1834. 1 vol. 8vo. London, 1835. 155.; to mem- 

 bers, 105. 



The subjects reported on are : — Geology of North Ame- 

 rica ; by H. D. Rogers. Laws of contagion ; by Dr. C. 

 Henry. Animal physiology ; by Professor Clark. Zoology ; 

 by Rev. L. Jenyns. Capillary attraction ; by Rev. J. Challis. 

 Physical optics ; by Professor Lloyd. Hydraulics, part 2. ; 

 by G. Rennie. Transactions of the Sections, and recom- 

 mendations of the Association and its Committee. The 

 Report on Zoology is, more detailedly, entitled, — 



" Report of the Recent Progress and Present State of 

 Zoology; by the Rev. Leonard Jenyns, M.A. F.L.S. F.Z.S. 

 F.C.P.S. " Of this we have been favoured with a copy; 

 separate from the rest of the volume, which we have not 

 seen. This report occupies 109 pages, and is replete with in- 

 formation of rich interest to those engaged in the study, or 

 in noting the progress of the study, of animals, in the relation 

 of what systematisers of animals have deemed their natural 

 affinities. It is, in this scope, as it were, a map of the extent 

 of human discovery, so far as the author has been able to 

 investigate it, which is to a great extent, and been able to 

 appreciate it ; and, incidental to this its scope, it has the 

 second one of indicating the tracts in the animal world, 

 viewed relatively to systematism, which are yet undiscovered. 

 The systematism cited is that of classifying animals in the 

 order of the agreements in the modes of their structure. The 

 author's course is in the order of the several classes of animals, 

 beginning with those deemed most highly organised, and 

 passing successively to those less so. The report is ended 

 with a chapter entitled " Conclusion," in which are pre- 

 sented remarks incentive to the promotion of the study of 

 zoology in Britain. Of these remarks, the more essential 

 are here quoted : — 



" Its general progress, viewing the natural system as the 

 true object of the science, and considering the very imperfect 

 knowledge we have of this system at present, must clearly 

 depend upon the discovery of new forms, and a more 

 thorough investigation of those already known to us. If the 

 former be necessary, in order to supply some of the nume- 

 rous links that are yet wanting to complete the chain of 

 affinities, the latter is" not less so, to determine the parts of 

 the system to which these links belong. But, of these two, 



