12 
BULLETIN 17, U. S. DEPARTMENT OF AGRICULTURE. 
The average temperature at the commission house for the low- 
temperature shipments was 29.8° F., as compared with 34.2° F. for 
the high-temperature shipments. The retail store in the interim of 
low-temperature experiments averaged 35° F., and during high-tem- 
perature experiments was 39.3° F. These differences are about half 
those prevailing during the transit period. 
The samples were allowed to remain in the commission house for 
five days. The first retail sample was withdrawn after four days, 
ao/88 
LOW TEMPERATURE SH/PMEATTS. 
H/GH TEMPERATURE SH/PMEA/TS. 
0.O/4/ 
SAMPLE A/9/ 
END OF HAUL. 
SAMPLE A/9 2 
AT WHOLESALER'S 
SAMPLE A/93 
AT RETA/LER'S 
AFTER ^ DA VS. 
SAMPLE A/9 4 
AT RETA/LERS 
AFTER 7DArS. 
Fig. 
-Deterioration during marketing period as affected by high and low transportation temperatures, 
as shown by the percentage of ammoniacal nitrogen. 
and the last sample after seven days at the retail store. A graphic 
representation of the average relative deterioration in low-tempera- 
ture and high-temperature shipments during the marketing period is 
given in figure 3. The deterioration in the high-temperature ship- 
ments is always at least one stage ahead of the low-temperature ship- 
ments. The changes during the commission period are very slight, 
the temperature in such places being usually low and therefore con- 
ducive to preservation. At the end of four days at the retailer's, 
or nine days after the railroad haul, the ammoniacal nitrogen in the 
