BOUND BOOKS. 



THE 



HUMBOLDT LIBRARY OF SCIENCE 



In this series are well represented the writings of Darwin, Spencer, 

 Huxley, Tyndall, Proctor, Clifford and other leaders of thought 

 in our time. 



We have the Library bound in Complete Sets, as follows : 



STYLE A. 



In this style the volumes average 640 pages and are arranged thus : 



No. 1- Cloth, plain edges, . . 



Sold Separately or in Sets. 

 No. 2. Half Seal, marble edges, 



STYLE R. 



Nos. I to III inclusive, are bound in 13 vols, of 492 pages each, 

 (average) thus : 



No. 3. Cloth, extra, red edges, . . $1.75 per vol. $22.75 per set 



No. 4. Half Seal, plain edges, . . 2.25 " 29.25 



No. 5. Half Seal", marble edges, . . 2.50 " 32.50 



No. 6. Half Morocco, marble edges, . . 2.75 " 36.75 " 



(Nos. 2, 3, 4, 5 a7id 6 are sold only in Sets.) 

 WOEKS BY PROFESSOR HUXLEY. 



MAN'S PLACE IN NATURE (with numerous illustrationa). 

 THE ORIGIN OF SPECIES. 



Two books in one vol. Cloth. . . . . . .75 



THE PHYSICAL BASIS OF LJFiJ, with other Essays. 

 LECTURES ON EVOLUTION, Ulustrated. By Prof. T. H. Huxley. 



Two books in one vol. Cloth. . . . . . .75 



ANIMAL AUTOMATISM, and other Essays. 

 TECHNICAL EDUCATION, and other Essays. 



Two books in one voL Cloth. . . • , .75 



