BY THE SAME AUTHOR. 



Origin of Species by Means of Natural Selection ; or, The Preservation of 

 Favored Races in the Struggle for Life. From sixth and last London edition. 

 2 vols. i2mo. Cloth, $4.00. 



Descent of Man, and Selection in Relation to Sex. With many Illustra- 

 tions. A new edition. i2mo. Cloth, $3.00. 



Journal of Researches into the Natural History and Geology of the 

 Countries visited during the Voyage of H. M. S. Beagle round the 

 World. A new edition. i2mo. Cloth, $2.00. 



Emotional Expressions of Man and the Lower Animals. i2mo. Cloth, 

 $3.50. 



The Variations of Animals and Plants under Domestication. With a 

 Preface, by Professor Asa Gray. 2 vols. Illustrated. Cloth, $5.00. 



Insectivorous Plants. ia.mo. Cloth, $2.00. 



Movements and Habits of Climbing Plants. With Illustrations. i2mo. 

 Cloth, $1.25. 



The Various Contrivances by which Orchids are Fertilized by Insects. 

 Revised edition, with Illustrations. i2mo. Cloth, $1.75. 



The Effects of Cross and Self Fertilization in the Vegetable Kingdom. 

 i2mo. Cloth, $2.00. 



Different Forms of Flowers on Plants of the same Species. With Illus- 

 trations. i2mo. Cloth, $1.50. 



The Power of Movement in Plants. By Charles Darwin, LL. D., F. R. S., 



assisted by Francis Darwin. With Illustrations. i2mo. Cloth, $2.00. 



The Formation of Vegetable Mould, through the Action of "Worms. 

 With Observations on their Habits. With Illustrations. i2mo. Cloth, $1.50. 



New York : D. APPLETON & CO., Publishers. 



