1871.] 



Change of Climate on the Human Economy. 



307 



Table IX. — To show the effect of a long voyage of 55 days (including 

 Tropical Weather and Salt Meat) on the weight. 

 Average temperature, England 50° F., Equator 88° F., South Atlantic 72° F. 

 1st weighing, January 9, 1864, England, Irr i f 34 in the tropics, 

 March 4, 1864, South Atlantic, j 00 aajs [ 21 in temp. zone. 



Food consumed per man daily. 



lb. oz. drs. 



j Average of first week ... 1 12 13| 



2nd 



Salt meat issued on 59 days 



(with 11 lime-juice days) 

 Fresh meat issued on 5 



last 



2 3 li 



Age. 



Total 

 number 

 weighed. 



Number 

 and 

 percentage 

 unchanged. 



Number 

 and 

 percentage 

 who gained. 



Range 



of 

 gain. 



Ave- 

 rage 

 gain. 



Number 

 and 

 percentage 

 who lost. 



Range 

 of 

 loss. 



Ave- 

 rage 

 loss. 



15 to 25 

 25 „ 35 

 35 „ 45 

 45 „ 55 



80 

 45 

 13 



per cent. 

 4=5 

 3=8-66 



per cent. 

 25=31-25 

 13=28-88 

 3=23-07 



lb. 

 1-11 

 1-13 

 4-7 



lb. 



3-84 

 3-77 

 5 



per cent. 

 51=63-75 

 29=64-44 

 10=76-91 



lb. 

 1-23 

 1-20 

 1-1.9 



lb. 



6- 72 



7- 41 

 6-3 



















Totals 

 and per- 

 centages. 



133 



7=5-07 



41=29-71 



1-13 



3-9 



90=65-22 



1-23 



6-93 



48 =3478 per cent. 



Thus Table IX. shows that after a 55 days' passage from the cool 

 climate of England across the equator to the south temperate zone, 65 

 per cent, of the crew had lost flesh to an average of 7 lb. nearly — the 

 juniors suffering, though not so much as the seniors. An increased sick- 

 list at the close corresponds to this. These results were not due to a 

 decrease in the ingesta, as the daily consumption during the last averaged 

 6 oz. more than during the first week. The cause was therefore partly 

 climatic and partly dietetic, salt meat being issued most of the time. 



Table X. — To show the effect of a long voyage in the Temperate Zone, 

 but on Salt Meat, on the weight. 



Average temperature, Cape of Good Hope 65° F., Sydney 62° F . 

 1st weighing, April 19, 1864, Cape of Good Hope, \ 49 clays, all spent in the temp. 

 2nd „ June 2, 1864, near Sydney, j zone. 



Salt meat issued on 48 days f ^od consumed per man daily 



/—:*!. on k...„ J lb. OZ. C 



(with 39 lime-juice clays) -> A f firgt ^ 



Jb resh meat issued on 1 day ° 



drs. 

 2 5 4| 

 2 5 11| 



Age. 



Total 

 number 

 weighed. 



Number 



and 

 percentage 

 unchanged. 



Number, 

 and 

 percentage 

 who gained. 



Range 



of 

 gain. 



Ave- 

 rage 

 gain. 



Number 

 and 

 percentage 

 who lost. 



Range 



of 

 loss. 



Ave- 

 rage 

 loss. 



15 to 25 

 25 „ 35 

 35 „ 45 

 45 „ 55 



77 



41 

 14 



per cent. 

 8 = 10-39 

 4= 9-75 

 3=21-43 



per cent. 

 60=77-92 

 22=53 66 

 9=64-30 



lb. 

 1-11 



1- 19 



2- 8 



lb. 



4- 78 



5- 54 

 5 



per cent. 

 9 = 11-61 

 15=36-60 

 2=14-30 



lb. 

 1-4 

 1-9 

 1-2 



lb. 



2- 11 



3- G6 

 1-5 



















Totals 

 and per- 

 centages. 



132 



15 = 11-36 



91=69-69 



1-19 



5 



26=19-69 



1-9 



2-58 



106=80-30 per cent. 



