A CCLIMA TIZA TION. 79 1 



place.* In other words, the peoples of the Mediterranean basin, 

 learning of their aptitude for a southward migration, would per- 

 haps move to Algeria, displacing the people of the Soudan and 

 the Semitic stocks toward the equator. To fill the place thus left 

 vacant, the people of northern France slowly drift to the Rhone 

 Valley and Provence for a generation or two, and their place is 

 taken by Germans and Belgians. 



That this is a tendency at the present time can not be doubted.f 

 Each generation adapting itself quietly would produce succeed- 

 ing ones with an inherited immunity. Unfortunately, this most 

 reasonable let-alone policy has two fatal objections : in the first 

 place, it requires a policy of noninterference; and, more potent 

 still, it absolutely neglects the political factor. To suppose that 

 France would quietly allow her people to be dispossessed by Ger- 

 mans, even though she aided her colonial policy thereby, or that 

 Germany would quietly leave Africa to her Gallic neighbor, is 

 not to be supposed for a moment. Nevertheless, it will be proba- 

 bly the only policy which will finally produce a new immune type 

 in the regions of the equator. Of course, England is by fate 

 condemned to follow the first policy we have outlined. France, 

 indeed, is the only one of the European states which extends over 

 the two contrasted European climates ; a large measure of her 

 success is probably due to that fact ; while all the nations north 

 of the Alps must traverse her territory or that of Italy on the 

 way to these newly discovered lands. Great political results are 

 therefore not impossible, if the prognosis we have indicated prove 

 to be correct. At all events, enough has perhaps been said to 

 show that great problems for science remain to be solved before 

 the statesman can safely proceed to people those tropical regions 

 of the earth so lately apportioned among European states. 



BIBLIOGRAPHY. { 



ARMAND. Traite de Climatologie, Paris, 1873. 



BASTIAN, A. Klima und Akklimatization, Berlin. Very diffuse. 



* This view is expressed by Ravenstein (Proceedings of the Royal Geographical Society, 

 1891, p. 35 et seq.} and by Dr. Felkin (British Association for the Advancement of Science, 

 1886, p. 730), who do not, however, seem to appreciate the biological analogies of their 

 mode of treatment. 



f Map of foreigners in France in Bulletin de PInstitut international de statisque, iii 

 trois liv., 1888, p. 36 ; this fact is noticeably prominent. The destination of French emi- 

 grants is given in L'4-nthropologie, v, p. 253. Vide also Transactions of the International 

 Congress of Demography and Hygiene, p. 131 et seq. 



\ Other and more technical articles upon the subject have been referred to in foot- 

 notes, such as Archives de M4decine navale, Bulletin de la Socie'te' de 1'Acclimatement de 

 Paris, Archiv fiir pathologische Anatomic und Physiologic, etc. Maps of the distribution 

 of certain diseases will be found in Gerland's Atlas der Volkerkunde and hi the works of 

 Drs. Chervin, Felkin, Lombard, and Sormani. 



