18 
BULLETIN 583, U. S. DEPARTMENT OF AGRICULTURE. 
Table 3.— Comparison of cost of moving portable buildings and Virginia camp 
buildings. 
Atlanta camp. 
Virginia camp. 
Operation. 
Actual cost. 
Convict 
labor. 
Operation. 
Actual cost. 
Convict 
labor. 
Setting foundation posts: 
Daps. 
Setting posts: 
Days. 
2 carpenter days, at S2.26. 
84.52 
18 J convict days, at 60 
811.10 
18.5 
13 convict days, at 77 
10.01 
cents. 1 
cents. 
114. 53 
13.0 
Razing buildings: 
Razing buildings: 
2h foreman davs,at Si. 90. 
4.75 
84 convict days, at 60 
50.40 
84.0 
2 foreman days, at 82.90. . 
5.80 
cents. 
36§ convict days, at 77 
2S. 10 
cents. 

38.65 
36.5 
Loading and hauling build- 
Loading and hauling build" 
ings: 
17| convict days, at 77 
13.48 
17 convict days, at 60 
S10. 20 
cents. 
cents. 
14J team days, at $1.91... 
27.70 
17 team days, at SI .91... 
32.47 

41.18 
17.5 
42.67 
17.0 
Erecting buildings: 
Erecting buildings: 
2 foreman days, at $1 .90 . 
3.80 
103 convict days, at 60 
61.80 
103.0 
1 foreman day, at 82.90. 
2.90 
cents. 
7 carpenter days, at 82.50. 
17. 50 
57 convict days, at 77 
43-89 
cents. 

68.09 
57.0 
Moving stable, barn, and offi- 
Moving stable: 
cers' tents: 
7 team days, at Si .91 
13.37 
1 foreman dav, at 82.25.. 2. 25 
60 convict days, at 60 
36.00 
2 foreman davs, 81.90 3. 80 
1 blacksmith dav, at 82.25 2. 25 
cents. 
49 37 
60.0 
2 team days, at *S1 .91 
3. 82 
46 convict days, at 77 
35. 42 
cents. 

47-54 
46.0 
Damage and loss: 
Damage and loss: 
Replacing4windowlights 
1.00 
1,500 feet b. m. lumber. 
IS. 75 '.. 
190 feet b. m. lumber, at 
3.80 
at S12.50 per M. 
820 per M. 
6 gallons roofing cement, 
3.90 
at 65 cents. 
12 squares ready roofing, 
18. 60 
at 81.55. 
10 pounds roofing nails, at 
6 cents. 
.60 
27.90 
Total 
Total 
237-89 
170.0 
234.09 , 282.5 
1 Salaries of guards and foremen included in the maintenance cojt of prisoners. 
DEPRECIATION OF PORTABLE BUILDINGS. 
It is impossible to forecast at this time what will be the life of the 
buildings. On July 10, 6 months after they were put into service, 
there was no noticeable depreciation. After their transfer to the 
new site, when they were more than 10 months old, the actual 
observable damage and loss amounted to less than 1| per cent of 
their value; it may be said- safely that the total depreciation during 
the first year amounted to no more than 5 per cent. It is to be ex- 
pected that this rate will increase each year during the economic life 
of the buildings, but what this rate will be can not be predicted. 
From present indications it seems entirely possible that their life 
may be as long as 8 years, but this figure probably is too great to 
use as a basis for estimating the economy of the buildings. It has 
been assumed for this purpose that the rate of depreciation will 
increase each year by an increment of 5 per cent, beginning with 5 
