1M l-i \IUONMENT 133 



sions we must rememl>er that tin- evidence which wo have 



points to tin* fact that neither environment nor training 

 can produ,-,.. in tin* sense of . human charac- 



teristics, good or bad. Hut it is cn\ ironm. -nt that d 

 mines whether Lri\- i-ties, when born into the 



i, shall perish by starvation nr conili.-t. or shall sur- 

 vive and iate tl.. | in following i:'-iii-rati..i^. 



Perhaps the most obvious an.l ri-roU8 effort <!' j 

 it-al riiviroiiin.-nt is tin- v,.|,.<-t i\ int!in-iM-. . -I ly 



lirnatir .i;ralat ins from r\tn-m- liat I FIH* <!. 1, 



an.l fmni 8X0081 iity to exc . I'hys- 



t- limits to human habitation. Lif<* 

 intainr,! with ^n-at difliculty in the ml Ant 



In tin- Torriil n-ftions activities m i; 



rontinrd to thr comparative cool of the early morning 

 or the evening. Tlie int. -use heat of mi<l-day makes in- 



\ssary. 



The heat belt, that section of the globe lyin- nmirhly 

 between 30 north latitude and 30 south latitude where 

 nean annual temperature is 68 Fahrenheit, is in- 

 habited by peoples who have during the last five hui 

 years contributed little to human advancement. The 

 natives of the tropics and siih-tropirs, of M 

 C.-nt! in republics, ti Indies. tlu greater 



of South America, j-ra.-tically the whole o! 

 Arabia, In-i ia, Indo-China, the Malay Peninsula, 



the Mala -lipelap'. Pol\- md the Philippine 



Islands, have contributed an almost negligible addition 

 to art. literature, science and thought. It has been the 

 inhabitant- of those countries which lie outside the heat 

 ..f Kurope. the I'nited Kingdom, the 

 I'nited States, Canada, Australia. Central and Northern 



se figure* 49 and 50. 



