Scientific Publications. 



PHXSIOIiO&ICAIi .ESTHETICS. By Gbant Alles. 13mo. Cloth, $1.50. 



" Mr. Gr.int Allen has seized on a subject that is entirely iL'nored by phyeio- 

 logical treatises, wiiile tliuse who nave handled it iro^i a pt^yclioio^cal point of 

 vieiv have in general been ivuoraut of pnysiology. Mr. (iritnt Allen hMs read 

 widely and has rea.l vvell. while lie sa^:;eBts several very mtei'e:iting cxpl£naii.)ns 

 01' mental condition that have hitherto been involved in hopeless obscuruy." — 

 Th3 Lancst. 



VAKIATION' or ANIMAIiS AND PLANTS UNDEK DOMESTI- 

 CATION. By CuABLES Daswis, LL. D., !•'. E. S. Wiih Illaatralions. 

 Eevised edition. 2 vols., 12mo. Cloth, $5.00. 

 " The object of this work is not to describe all the many races of animals 

 which have been domesticated by man, and of the plants which have been culti- 

 vated by him. It is my Intention to give under the bead of each species only 

 such facts as I have been able to collect or observe, sbowing the amount and 

 natarc of the chancres which animals and plants have undergone while under 

 man's dominion, or which bear upon the general principles of variation."— Jlr(»« 

 ifis Introduction. 



INSECTIVOROUS PliANTS, By CaAELES Darwin, LL.D., F. E. S, 12mo. 

 Cloth, $2.0D. 



MOVEMENTS AND HABITS OT CI.IMBING PI-ANTS. By Chahles 

 Daewih, LL. D., F. E. S. With Illustrations. ISmo. Cloth, $1.25. 

 CosTENTS.— Chapter I. Twining Plants ; 11. Leaf-Ciimber? ; III and IV. 

 Tendril-Bearers ; V. Hook and Root Climbers ; Conclnding Remarks. 



VAEIOIJS CONTEIVAjrCES BY WHICH ORCHIDS ABE FER- 

 TILIZED BY INSECTS. , By Chakles Da3win, LL. D., F. R. S. 



With Illustrations. Eevised edition. 12mo. Cloth, $1.75. 

 " The object of the work is to show that the contrivances by which orchids 

 are fertilized are as varied and almost as perfect as any of the most beauiirnl 

 adaptations in the animal kingdom ; an'l, secondly, to show that these contriv- 

 ances have for tibir main object the fertilization of the flowers with pollen 

 brought by insects from a distinct plant."— JV^m t?ie Introduction. 



EFEECTS OF CROSS- AND SEtF-FEBTItlZATION IN THE 

 VEGETABLE KINGDOM. By Chael s Dakwin, LL. D., F.E. S. 

 12mo. Cloth, $i.OO. 



"As plants are adapto;! by such diversified and effactive means for crops- 

 fertilizition, it might have been inferred from this fact alone that they derive! 

 some groat advantage from the process : and it is the object of the present work 

 to show the nature and importame of the benefits thus derived. There are, how- 

 ever, some exceptions to the rule, but they need not make us doubt its truth any 

 more than the existence of some few plants which produce flowers, and yet never 

 set seed, should make ns doubt that flowers are adapted for the production of 

 seed and the propagation of the species."— J'lom the Introductory Bemarks. 



Ifew York : D. APPLETON & CO., 1, S & 5 Bond Street. 



