10 BULLETIN 11, U. 5. DEPARTMENT OF AGKECULTUBE. 
thermograph., which was next to the experimental box of poultry, 
showed an average temperature of 1S° to 26° F. (-7.8° to -3.3° C.) ; 
second, those which showed an average temperature of 27° to 30 c F. 
(-2.8° to - 1.1° C:); third, those at 31° to 34° F. (-0.5° to 1.1° C.) ; 
and fourth, those at 35° to 39° F. (1.7° to 3.9° C). None of the 
experiments showed an average temperature of over 39° F. (3.9° C). 
The temperature during portions of the haul have exceeded these 
group limits, but the average temperature for the entire period of 
FP£S/i Crt/CXFA/ 
Fig. 2. — Deterioration during haul as affected by ear temperatures, as shown by the percentage- of ammo- 
niacal nitrogen. 
transportation lay between the maximum and minimum limits as 
given for the group. These groups are shown in Table 2 and the 
results are represented graphically hi figure 2. 
Fresh chickens contain about 0.0110 per cent of ammoniacal nitro- 
gen. Amounts distinctly in excess of this figure may be taken as 
an indication of deterioration, especially when obtained by average,, 
hence it is made the base line of the chart. 
When the car temperatures averaged from 18° to 26° F. (-7.8° to 
— 3.3° C.) the deterioration was very slight, the ammoniacal nitrogen 
having increased to only 0.0120 per cent; but when the car tempera- 
tures were from 35° to 39° F. (1.7° to 3.9° C.) the ammoniacal nitrogen 
had increased to 0.0141 per cent, a deterioration of three times that 
