306 



Dr. A. Rattray on the Effects of 



[Feb. 16, 



Table VII. — To show the effect of a 1^- year's stay in a Tropico -temperate 



region on the weight (including 4 trips between Sydney and Cape York). 



1st weighing, August 10, 1864, near Cape York, "1 J 184 in the tropics, 



2nd „ November 6, 1865, near Cape York, J ™° aa ^ s \ 269 in temp. zone. 



Salt meat issued on 229 days 



(with 154 lime-juice days) 

 Fresh meat issued on ... 224 ,, 



Food consumed per man daily. 



lb. oz. drs. 



Average of first week ... 2 8 7 | 

 last „ ... 2 1 7 



Age. 



Total 

 number 

 weighed. 



Number 



and 

 percentage 

 unchanged. 



Number 



and 

 percentage 

 who gained. 



Eange 



of 

 gain. 



Ave- 

 rage 

 gain. 



Number 

 and 

 percentage 

 who lost. 



Eange 



of 

 loss. 



Ave- 

 rage 

 loss. 



15 to 25 

 25 „ 35 

 35 „ 45 

 45 „ 55 



29 

 27 

 5 



per cent. 

 1= 345 

 4=14-81 



per cent. 

 18=62-07 

 8=29-63 

 3=60 



lb. 

 2-15 

 1-16 

 5-10 



lb. 



6-17 

 5-125 



8 



per cent. 

 10=34-48 

 15=55-55 

 2=40 



lb. 



2-14 

 1-15 

 1-3 



lb. 



6 



5-6 

 2 



















Totals 

 and per- 

 centages. 



61 



5= 8-19 



29=47-54 



1-16 



6-08 



27=44-26 



1-15 



5-52 



Y 



34=55-74 per cent. 



During the next eighteen months the crew had more fresh meat in the 

 northward trips, the beneficial influence of which manifested itself by re- 

 ducing the percentage of those who lost flesh to 28 j (Table VIII.), as well 

 as the percentage of loss. The appetite, however, remained much im- 

 paired. 



Table VIII. — To show the effect of a 3 years' stay in a Tropico-temperate 

 region on the weight (including 8 trips between Sydney and Cape York). 



1st weighing, August 10, 1864, near Cape York, 1 1U1 1 f 532 in the tropics, 

 2nd „ September 25, 1867, near Cape York, j 1A * A aa ? s { 609 in temp. zone. 



Salt meat issued on 575 days f Food C01 ^ med P er ma £ daily. 



(with 540 lime-juice days) \ . - „ . . . , A £ °|' a i s \ 



] Average of first week ... 2 8 7 | 



L „ last „ ... 1 11 10 



Fresh meat issued on 



586 



Age. 



Total 

 number 

 weighed. 



Number 

 and 

 percentage 

 unchanged. 



Number 

 and 

 percentage 

 who gained. 



Eange 



of 

 gain. 



Ave- 

 rage 

 gain. 



Number 

 and 

 percentage 

 who lost. 



Eange 

 of 

 loss. 



Ave- 

 rage 

 loss. 



15 to 25 

 25 „ 35 

 35 „ 45 

 45 „ 55 



25 

 15 

 2 



per cent. 

 1= 4 

 1= 6-68 

 1=50 



per cent. 

 19 = 67 

 8=53-33 



lb. 



3-40 

 1-18 



lb. 

 14-68 

 7-125 



per cent. 

 5=20 

 6=40 

 1=50 



lb. 



3-12 

 1-15 

 0-1 



lb. 



5- 2 



6- 16 

 1 

























Totals 

 and per- 

 centages. 



42 



3= 7*14 



27=64-29 



1-40 



12-5 



12=28-57 



1-15 



5-42 



30=71-43 percent. 



A similar slowly progressive impairment of the physique also occurs 

 during long sea voyages, in which ships pass repeatedly and suddenly from 

 cold or temperate to tropical latitudes, and the reverse. 



