WORKS ON NATURAL SCIENCE. 



18. THE CONCHOLOGISrS NOMENCLATOR, or Cata- I 

 logue of recent species of Shells, with their authorities, \ 

 synonymes, and references to works where figured or de- \ 

 scribed, by AGNES CATLOW, assisted by LOVELL REEVE, \ 

 F.L.S. In sheets for labels, 20*. Cloth, 21*. Half- 

 bound in calf, cloth sides, interleaved with blank pages for 

 remarks, 25*. 



A Catalogue of three hundred and twenty closely printed pages, 

 serving as a Register of all the known species. 



19. THE PLANETARY AND STELLAR UNIVERSE. 

 By R. J. MANN. In one vol. 8vo. with 50 lithographed 

 astronomical Diagrams, and Map of the Circumpolar Con- 

 stellations; price 5*. cloth. 



" Snch is a brief abstract of the discoveries of Newton ; and we may add that they 

 are clearly explained and elegantly illustrated in ' The Planetary and Stellar Universe,' 

 to which we refer such of our readers as may be desirous of becoming more fully 

 acquainted with them." The Westminster and foreign Quarterly Review. 



20. THOUHGTS ON A PEBBLE, or a First Lesson in Geo- 

 logy, by GIDEON A. MANTELL, Esq., L.L.D., F.R.S., &c., 

 Author of ' Thoughts on Animalcules/ Seventh edition, 

 with eleven additional illustrations, price 3*., gilt edges. 



" This elegant little book, primer-like in size, and illustrated by exquisite plates 

 and wood engravings, serves to convey some of the grandest truths in geology in the 

 simplest guise. Its snowy paper, excellent type, and beautiful illustrations recommend 

 it to the eye of taste, and it cannot be perused without pleasure and profit." American 

 Journal of Science. 



* 



21. ILLUSTRATIONS of the WISDOM and BENEYO- \ 

 LENCE of the DEITY, as manifested in nature. By H. ' 

 EDWABDS, L.L.D. Price 2*. 6d. cloth. 



" A little excursion in the track of Paley and the broad road of the Bridgewater 

 Treatise. Animals, Atmosphere, Organic Matter, Light and Electricity are the 

 natural elements out of which the author deduces his pious lessons, leading to a 

 First Cause in wonder, admiration and worship." Literary Gazette. 







