31Q Dr. A. Rattray on the Effects of [Feb. 16, 



Table XIII. — To show the effect of climate and diet on the weight of an 

 adult crew, June 18 to September 14, 1869. 



Average temperature, England 60° F., Equator 77° F., Bahia 76° F. ; England (return) 



60° F. 



Remarks. 



Total 

 number 

 weighed. 



Number 

 and 

 percentage 

 who gained 

 or did 

 not lose. 



Eange 



of 

 gain. 



Ave- 

 rage 

 gain. 



Number 

 and 

 percentage 

 who lost. 



Eange 



of 

 loss. 



Ave- 

 rage 

 loss. 







Effect of first 57 days 



n , . , f 45 in the tropics 

 of which 1 38 Qn galt m ^ 



425 



per cent. 

 64 = 15-06 



lb. 

 1-15 



lb. 



2-58 



per cent. 

 361=84-94 



lb. 



1-28 



lb. 

 5-75 



„ , . , f 66 in the tropics 

 of which | 61 on galt m ^ 



296 



36 = 12-18 



-1-"!^ 



3-5 



9P-Q — 87-84 



1 °»0 



r v4-7 



O '±1 



Effect of last 31 clays 



p i • -i f 21 in the tropics 

 of which ( 10 on salt meat. 



310 



164 = 52-93 





2-64 



146=47-1 



|-10 



2-81 



Subsequent effect of 28 days 

 in harbour (England) on 

 fresh meat and vegetables. 



391 



349=89-26 



1-19 



4-70 



42=10-74 



1-9 



2-G6 



Table XIV. shows that, while the same prevailed among the ship's boys 

 (age 17 to 20) and naval cadets (age 14 to 17), youth and lighter work 

 &c, have an evident effect in lessening the percentage of loss under such 

 adverse agencies, and increasing the gain under opposite conditions. 



Table XIV. — To contrast the variations in weight, during long voyages, 

 of the men, boys, and naval cadets, June 18 to September 14, 1869. 



Average temperature, England 60° E., Equator 77° F., England (return) 60° F. 



England to Bahia (lat. 11° S.), 

 88 days. 



Total 

 number 

 weighed. 



Number and 

 percentage who 

 gained or did 

 not lose. 



Number and 

 percentage 

 who lost. 



c t. • i f 4o m the tropics, 

 01 which „o n j. 



{ 38 on salt meat. 



Effect of first 88 days 



c i • u f 66 in the tropics, 

 of which i r , 1 , ' 

 a t [ 61 on salt meat. 



Effect of last 31 days 



r i • , f 21 in the tropics, 

 of which | 10on galtmeat / 



Subsequent effect of 28 days in 

 harbour (England) on fresh 

 meat and vegetables. 



Men 425 

 Boys 64 

 Cadets 60 



Men 296 

 Boys 40 

 Cadets 58 



Men 310 

 Boys 41 

 Cadets 59 



Men 391 

 Boys 34 

 Cadets 28 



per cent. 

 64= 15-06 

 28= 43-74 

 23= 38-33 



36= 12-18 

 16= 35 

 20= 34-47 



164= 52-93 

 30= 73-17 

 34= 57-62 



349= 8926 

 30= 90-58 

 28=100 



per cent. 

 361=84-94 

 36=56-25 

 37=58-33 



260=87-84 

 24=60 

 38=65-51 



146=47-1 

 11=26-82 

 25=42-37 



42=10-74 

 4=11-76 



