— 35 — 
The average dry matter contained in these two varieties, on 
December 10, has already been given, as, 17.48 and 20.43 per cent., 
respectively, and the table corroborates the existence of a difference 
between the two varieties in this respect. 
The quantity of dry matter is quiie uniformily greater in the 
first third than in either of the others, while there is but little differ- 
ence between the quantities present in the other two thirds. The 
dry matter, however, is so uniformly distributed throughout the beet 
that it requires the taking of the general average to make the law 
of its distribution evident. In an instance like this, the question, 
What does air-dry mean, ought to be anticipated. Determina- 
tions of moisture, in other samples, made by drying to constant 
weight, at the temperature of boiling water, showed an average 
water content of about 2 per cent. This determination is tedious, 
and somewhat unsatisfactory, but after trying the air bath at various 
temperatures I adopted the water oven, and heating to constant 
weight, as the most satisfactory. 
Other varieties of beets, particularly stock beets, were experi- 
mented with and showed results identical with those recorded in the 
table, except, of course, that the percentage of dry matter is much 
lower. 
THE MARC. 
This is what is left of the beet after the sugar and other sub- 
stances, soluble in water, have been removed. The extent to which 
the soluble portion of the beets is removed determines the percent- 
age of marc. This percentage is assumed to be about 5 per cent. 
My samples were grated, or rasped, and washed with more care than 
can be given them on a manufacturing scale, and this, probably, is 
the reason that my figures are slightly below 5 per cent. This was 
not the case when the beets were simply sliced. The experiments 
were made to determine the effect of irrigation upon the amount of 
marc present; also, to study the ash constituents left in this by- 
product of sugar making. 
The average of six determination's, using the Vilmorin variety, 
was 4.21 per cent.; the average of five determinations, made with 
the Kleinwanzlebener, was 4.38 per cent. Both of these series 
were raised with irrigation. Only one lot of beets, grown without 
irrigation, was tested to determine the marc, and this gave 5.25 per 
cent. I do not think that this result, though a large sample was 
taken, is conclusive that beets grown without irrigation really con- 
tain more marc than irrigated beets. 
THE FODDER ANALYSES OF BEETS. 
It is not my purpose to discuss the feeding value of either the 
roots or leaves of the beets. The value of the roots, for feeding 
purposes, is fully understood, as also the conditions under which 
