Scientific Publications. 



PHY.SIOLOGIC AL ^ sTHETICS. By Grant Allex. 12mo. Cloth, $1.50. 



*' Mr. Grint Alien has yeiziul on a subjuot that is entirely ii-nored by phynio- 

 lo^ical treatii<es, wiiik; tlu)!?i! \vl)o liave handie>l it Iro.n a pfyclio.o^ric.il poii't of 

 vi^w hiivo in 1,'enc'ral been i^'iioant of puyr^ioloj,'y. Mr. linnit Allen hax read 

 wi.lely and h:i9 real well, while lit; kujj^ohis several very mtoie-'liuj,' explanaii )n8 

 of ineiit:il condiliou that have hitherto been involved in hopeless obsjuruy."— 

 ThJ Luncst. 



VARIATION OF ANIMALS AND PLANTS UNDER DOMESTI- 

 CATION. By Charles Daiuvix. LL. D.. F. R S. Wiih Ilhirftraiions. 

 Revised edition. 2 vols.. 12mo. Cloth, 15.00. 

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

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

 vated by him. It is my intention to give under the head of each species only 

 euch facts as I have been able to collect or observe, showing the amount and 

 nature of the changes whicli animals and plants have underizone while under 

 man's dominion, or which bear upon the general priuciplea of variation."— i^'rw/t 

 the Introduction. 



INSECTIVOROUS PLANTS. By Charles Darwin, LL. D., F. R. 8. 12mo. 

 Cloth, $2.03. 



MOVEMENTS AND HABITS OF CLIMBING PLANTS. By Charles 

 Dauwin, LL. D., F. R. S. With Illustrations. 12mo. Cloth, $ I. £5. 



Contents.— Chapter I. Twining Plants ; 11. Leaf-Climber-' ; III and IV. 

 Tendril-Bearers; V. Hook and Hoot Climbers ; Concluding Remarks. 



VARIOUS CONTRIVANCES BY WHICH ORCHIDS ABE FER- 

 TILIZED BY INSECTS. By Cuarles Da:iwin. LL. D., F. H. S. 



With Illustrations. Revised 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 a>> perfect as any of the most beauii!'ul 

 adiptations in the animal kingdom ; an'l, t^econdly. to show that these contriv- 

 ances have for their main object the fertilizition of the flowers with pollen 

 brou^'ht by insects from a distinct ^l&nV'—From the Introduction. 



EFFECTS OF CROSS- AND SELF-FERTILIZATION IN THE 

 VEGETABLE KINGDOxM. By Charl 3 DAinviN, LL.D., F.R. S. 



12mo. Cloth, $i\00. 



"As plants are adaptcl by such diversified and eff?ctive means 'or cross- 

 fcrtilizition, it miglit have been inferred from this fact alone thit thoy derived 

 some great advantage from the procei^s ; and it is tlie object of the prest! ♦ work 

 to show the naiuro and importance 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 fev/ plants which produce flowers, and yet never 

 set seed, f^honld make ns douht that flowers arc adapted for the production of 

 seed and the pi-opagatinn of the specie?.'^— From the Introductory Remarks. 



"New York: D. APPLETON" & CO., 1, 3 & .'i Bond Street. 



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