458 Literary Notices. 



atomic weights, chemical notation and nomenclature, the relations 

 of atomic weights, law of volumes, atomic volume, the unitary sys- 

 tem of atomic weights, isomerism, isomorphism, dimorphism, the 

 reaction of bodies on each other, the views of Berthollet on the causes 

 of decomposition — all presented in the clearest way. Dr. Apjohn 

 works up logically from those simple ideas that are easily appre- 

 hended, to the more complex propositions assembled under the 

 various heads we have cited, and it will not be his fault if those who 

 read his book do not learn to thmk, as well as to recollect the bare 

 facts of the science. We particularly admire the skill with which 

 he has avoided the suggestion of fallacy that is inseparable from a 

 metaphysical treatment of chemistry. He keeps strictly to facts, 

 and when discussing theoretical views, such as those of Berthollet 

 or Gerhardt, he is singularly fair, and ably discriminates between 

 the judicious use of an hypothesis, and its premature acceptance, or 

 rejection, upon insufficient grounds. 



The Flora of Surrey ; or, a Catalogue of the Flowering Plants 

 and Ferns found in the County, with the Localities of the Rarer 

 species, from the MSS. of the late J. D. Salmon, F.L.S. Compiled 

 for the Hohnesdale Natural History Club, Reigate, by James 

 Alexander Brewer. Van Voorst. — Botanists and collectors will 

 appreciate the great labour necessary for the production of this 

 useful work ; and we congratulate the Holmesdale Natural History 

 Club on having made so important an addition to local natural 

 history. The work is enriched by two large maps — one copied from 

 a geological chart of the county, prepared by Joseph Prestwich, 

 Esq., and the other arranging the county into botanical divisions cor- 

 responding with references in the text. An appendix exhibits the 

 geological distribution of the plants ; and there are two indexes — 

 one giving the scientific names of orders and genera, and the 

 other the common English names of species. On comparison, it 

 appears that " the plants of Surrey are |ths of those of the United 

 Kingdom ;" that the Surrey Dicotyledons amount to -n-ths of those 

 of the United Kingdom ; the Monocotyledons to frds, and the ferns 

 and their allies to ~ ditto. 



Flora op Marlborough, with Notices of the Birds, and a Sketch 

 of the Geological Features of the Neighbourhood; with a map. 

 Van Voorst. — Mr. T. A. Preston states, in the preface, that this list 

 is the result of five years of his own botanizing, and he invokes the 

 labours of others to render it more complete. It has been especially 

 compiled for the students of Marlborough College, and is confined to 

 a circle having a radius of six miles from the town, of which a 

 photographed map is given. The work affords another pleasing 

 and useful instance of attention to local natural history ; and we 

 hope Mr. Preston will succeed in imparting to the Marlborough 

 students a love of such pursuits. 



Dk tion'aky ok Natural History TERMS, with their Derivations, 

 including the various Orders, Genera, and Species, by David H. 

 M'Nicholl, M.D., Member of* the Royal College of Physicians. 

 Lovcll linevc and Co. — The enormous number of technical terms, 



