DIGESTIBILITY OF RAW STARCHES AND CARBOHYDRATES. 13 
grains in the feces. The coefficients of digestibility of the protein 
and fat of the entire diet were 86.3 per cent and 95.6 per cent, 
respectively. 
TaBLE 8.—Digestion experiments with raw white corn meal in a simple mixed diet. 
Constituents of foods. 
Experiment, subject, and diet. | of food. 
| Experiment No. 1186, subject A. T. M.: 
| Frozen pudding (carbohydrates of 
raw white corn meal, 362.2 grams or | Grams. | Grams. | Grams. | Grams. | Grams Grams. 
—_—————_ 
Water. | Protein. Fat. hydrate. | Asn. 
| 
61.26 per cent of total carbohydrate)..| 2,370.0] 1,460.9 94.1 205. 0 591.3 18.7 
Tac Oey eee eee 1,028. 0 893. 3 8.2 WN 119. 2 5.1 
Sie eee oe sees aes dddose ars anita shore w|mnecacisinas|- eee cnc se| acm en eces|ecrenccnccleoseasance 
Total food consumed.............--- 3,398.0] 2,354.2 102.3 207.1 710.5 B.8 
Leis. LW 4 anise HDEO Ml sear 13.7 10. 4 22.6 pe: 
WIMMPMPEI ITI ZO cco ooo ces cwsiccic et onecceccad sceece secs 88. 6 196. 7 687.9 15.5 
Per cent. | Per cent. | Per cent. | Per cent. 
Digostipility pl emtire ration... ~~...) 2 fase ewc cess 86.6 95. 0 96. 8 | 65.1 
Estimated digestibility of carbo- 
byduaies of raw white corn meal 
“ea tected SR SAA eS RS BS 22S Oe ee | ee ee nina Sed ee eee Be 8 
Oe ee eee 
———S=S |s_——S | _—eueaea—SS OOO SSS OO 
_ Experiment No. 1187, subject R. J.: 
Frozen pudding (carbohydrates of 
raw white corn meal, 351.3 grams or | Grams. | Grams. | Grams. | Grams. 
61.26 per cent of total carbohydrate).| 2,298.0 | 1,416.5 91.2 198. 8 
(re, ee ee ey oe ee eee eee 1,254.0 | 1,089.7 10.0 PTS 
SUT ae ot oe ee ae ea ee 2050 Neeeeeen cine aoe mee cetetaiae So 
Total food consumed. .............- 3,572.0 | 2,506. 2 101. 2 201.3 
CLONE we ee eae Cape eho t oe 2.04 FS2 coo 622 12.5 hoD 
PATRI G EMI OG rer fas acm caine s Secl- 3<\| a cleis Sos» cic] 5 cecies owe 88. 7 193. 4 
Per cent.| Per cent 
Digestibility of entire ration...........|.........-|---------- 87.6 96.1 
Estimated digestibility of carbohy- 
dnites of taw white.corm meal-alone.|....-...-.|.c-.25-.2 [sss esas leeeeeecce 
Experiment No. 1188, subject C. M.: 
Frozen pudding (carbohydrates of 
raw White corn meal, 355.1 grams or | Grams. | Grams. 
61.26 per cent of total carbohydrate).| 2,323.0] 1,431.9 
ber des ols Ress 2S too eee eee eee 1,247.0 | 1,083.6 
er EE ese a bits So onic ines eo aeinse ofossecsd amabicane acc cclesaalalngs|ncciteaccne 
Total food consumed.............-.- 3,570.0 | 2,515.5 
i ee lane se tease wen oe os 1.0 |i. Steet 
PERSPEIUE PHONIZOULT =. 22> fet. «sph. ss |>P ebE bee p<hewidtar ess < 
; ; ; : Per cent. | Per cent. | Per cent. | Per cent. 
Digestibility of entire ration...........).......-.-|...-2-.--- 84.8 95.6 96. 8 61.8 
Estimated digestibility of carbo- 
hydrates of raw white corn meal 
MOM Ge aoe asec faves orcs S. oes ech Ses ate see t| 5 Ses - woo hae hs esate - |e em seicinjere OB: 8: | asaee 
Average food consumed per subject per | Grams. | Grams. | Grams. | ‘Grams. | Grams. | Grams. 
GE tS 8 REE SAC 2 ee Oe Eth 819. 5 34. 0 68. 0 241.5 8.1 
Per cent. | Per cent. | Per cent. | Per cent. 
Average digestibility ofentire ration.......)..........]...-...-.- 86. 3 95. 6 96. 8 65. 8 
Average digestibility of carbohydrates of | 
AWA THUG COLMANCALAIONG ) ooo. occ.c cocc|cccnn ows mclaeuceiccceclsccnlse-sce eo edeSes 98.6) [ica cate 
EXPERIMENTS WITH RAW WAXY MAIZE MEAL. 
Three experiments were conducted with raw waxy maize meal. 
The material was obtained from G. N. Collins, Bureau of Plant 
Industry, who had discovered this previously unknown type in 
samples of maize sent from China in 1908.° The characteristic 
of this grain is the endosperm which when cut shows a dull, 
smooth surface like that of hard wax. There is only a trace of starch 
in the scutellum. The endosperm contains a considerable amount 
of material having granules similar in appearance to those of corn- 
5U.S. Dept. Agr., Bur. Plant Indus. Bul. 161 (1909). 
