190. STORRS. AGRICULTURAL EXPERIMENT STATION. 
The fuel value of a pound: of each of the feeding stuffs as 
given in the tables was obtained by multiplying the number of 
hundredths of a pound of protein and of carbohydrates by 18.6, 
and the number of hundredths of a pound of fat by 42.2, and 
taking the sum of these three products as the number of calo- 
ries of available energy in the materials. We consider it impor- 
tant to insist here, as has been done elsewhere in this Report 
and other Reports, that the factors for fuel values here used, 
which .are essentially those proposed by Rubner, are in no 
sense to be regarded as settled. These calculations of fuel 
values represent simply a preliminary effort to compare the 
feeding stuffs with respect to the quantities of energy they are 
capable of yielding to the body. The figures are by no means 
an exact measure of the nutritive effects of the food materials. 
We hope to discuss this matter more in detail in another place. 
The heats of combustion of the majority of the specimens were 
also made with the bomb calorimeter. 
Two sets of averages are given in tables 44 and 45 beyond: 
the first is the average of the samples analyzed during the past 
year; the second is the average of all analyses of similar mate- 
rials made up to the present time in this laboratory. 
Description of samples.—No detailed description of samples 
is necessary in this place. The milling and by-products were 
such as are ordinarily found in the market. T he cured fod- 
ders were such as are ordinarily cut and cured on Connecticut 
farms. ‘The dairy tests, in connection with which the samples 
were taken, and the laboratory number of the samples analyzed 
with each test, are as follows: | 
In connection with dairy test No. 39 six samples of feeding stuffs were ana- 
ly zed, namely Nos. 1783, 1784, 1785, 1786, 1787, 1788; with test No. 40, eight 
samples, Nos. 1792, 1793, 1794, 1795, 1796, 1797, 1708, 1799; with test No, 
41, six samples, Nos. 1800, 1801, 1802, 1803, 1804, 1805; with test No. 42, 
seven samples, Nos. 1806, 1807, 1808, 1809, 1810, 1811, 1812; with test No. 
43, eight samples, Nos. 1813, 1814, 1815, 1816, 1817, 1818, 1819, 1833: with 
test No. 44, five samples, Nos. 1820, 1821, 1822, 1823, 1824; with test No. 
45, five samples, Nos. 1825, 1826, 1827, 1828, 1831; and with test No. 46, three 
samples, Nos. 1832, 1834, 1835. 
