THE LAST FRONTIER 



cally constant whatever the temperature of the air 

 and is dangerous even on a cloudy day, when the 

 heat waves are effectually screened off, but when the 

 actinic rays are as active as ever. For this reason 

 the protection of helmet and spine pad should never 

 be omitted, no matter what the condition of the 

 weather, between nine o'clock and four. A very 

 brief exposure is likely to prove fatal. It should be 

 added that some people stand these actinic rays 

 better than others. 



Such being the case, mere temperature tables 

 could have little interest to the general reader. I 

 append a few statistics, selected from many, and il- 

 lustrative of the different conditions. 



Locality. 



Coast . . . 

 Isiola River 

 Tana River 

 Near Meru 

 Serengetti Plains 

 Narossara River 

 Narossara Mts. 

 Narossara Mts. 



Eleva- 6 8 Apparent conditions 



tion. a.m. noon. p.m. 



80 90 76 Very hot and sticky 



2900 65 94 84 Hot but not exhausting 



3350 68 98 79 Hot but not exhausting 



5450 62 80 70 Very pleasant 



2200 78 106 86 Hot and humid 



5450 54 89 69 Pleasant 



7400 42 80 50 Chilly 



6450 40 62 52 Cold 



408 



