670 POPULAR SCIENCE MONTHLY. 



Always, in accounting for such a phenomenon, two factors are to 

 be considered race and environment. Hence, in our study of cli- 

 matic circumstances the first must be carefully eliminated before 

 proceeding to study the second. 



Finally, the effects of ethnic intermarriage or crossing must 

 in every case be taken into account. It is present as a complica- 

 tion in almost all colonial populations, and is by far the most 

 subtle and difficult of all eliminations to be made. Notwithstand- 

 ing the objection that accommodation to climate by intermarriage 

 is in reality not acclimatization at all, but the formation of an 

 entirely new type, the two are continually confused ; and crossing 

 with native stocks is persistently brought forward as a mode and 

 policy of action. As an element in colonization, and a devious 

 means of avoiding the necessity of acclimatization, it arises to 

 complicate the situation. Intermarriage is said to be the secret 

 of Spanish and Portuguese success ; * in Mexico this has appar- 

 ently been the case,t as well as in the Philippines. X Dr. Bordier 

 states that the Spanish and southern French are more prolific 

 than others in marriage with negroes ; * and concludes that the 

 only hope for the future of French colonization in Cochin China 

 lies in such crossing with the natives. || The efficacy of this 

 remedy is to-day accepted quite generally by anthropologists. 

 Topinard agrees with Ten Kate that half-breeds resist climatic 

 changes better than pure whites,^ and other authorities concede 

 the same. Desmartis has even proposed to inoculate the British 

 troops in India with Hindu blood as a preventive of tropical dis- 

 orders. X 



Memoirs de PAcademie de Medecine, Paris, xxix, 187S. It formed the basis of an inter- 

 esting discussion at the meeting of the Association fran9aise pour I'Avancement des Sci- 

 ences. Vide Bulletin for ISYS, p. S03. Sormani, Chervin, and Lagneau have also treated 

 of it in their respective publications. 



* Revue d' Anthropologic, N. S., iii, p. 265. Dr. Felkin finds the success of south 

 Europeans in their element of Semitic blood (Scottish Geographical Magazine, ii, p. 652). 



f Ibid., V, p. 318. 



\ Bulletin of the American Geographical Society, 1883, No. 2. 



* Colonisation Scientifique, p. 285. An example is also given in Revue d' Anthropologic, 

 second series, viii, p. 190. 



II Ibid., p. 397. 



^ Elements d' Anthropologic, p. 204. The Hudson Bay Company refused for many 

 years to employ trappers with white wives, partly because they desired to increase the 

 supply of half-breeds (PoHtical Science Quarterly, ii, p. 139). 



I) Proceedings of the British Association for the Advancement of Science, xxix, p. 178. 

 "Bertillon's principle" is accepted by Landowsky in the Bulletin of the French Associa- 

 tion for the Advancement of Science, 1878, p. 817. In Revue d'Anthropologie, second 

 series, viii, p. 190, is a statistical account of crossing in Algeria on a meager basis, seeking 

 to prove that French crosses with natives are more prolific than those with Germans. 



X Proceedings of the British Association for the Advancement of Science, 1861, p. 143. 



