D. APPLETON & CO.'S PUBLICATIONS, 



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CHARLES DARWIN'S WORKS. (Continued.') 



THE VARIATIONS OF ANIMALS AND PLANTS UNDER 

 DOMESTICATION. With a Preface, by Professor ASA GRAY. 

 2 vols. Illustrated. Cloth, $5.00. 



INSECTIVOROUS PLANTS. 12mo. Cloth, $2.00. 



MOVEMENTS AND HABITS OF CLIMBING PLANTS. 



With Illustrations. 12mo. Cloth, $1.25. 



THE VARIOUS CONTRIVANCES BY WHICH ORCHIDS 

 ARE FERTILIZED BY INSECTS. Revised edition, with 

 Illustrations. 12mo. Cloth, $1.75. 



THE EFFECTS OF CROSS AND SELF FERTILIZA- 

 TION IN THE VEGETABLE KINGDOM. 12mo. 

 Cloth, $2.00. 



DIFFERENT FORMS OF FLOWERS ON PLANTS OF 

 THE SAME SPECIES. With Illustrations. 12mo. Cloth, 

 $1.50. 



THE POWER OF MOVEMENT IN PLANTS. By CHARLES 

 DARWIN, LL. D., F. R. S., assisted by FRANCIS DARWIN. With 



Illustrations. 12mo, Cloth, $2.00. 



THE FORMATION OF VEGETABLE MOULD THROUGH 

 THE ACTION OF WORMS. With Observations on their 

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