. Medical diseases of infancy and childhood. are minute oil globules, probably coated with proteid, a varying num-ber of small colorless cells without fat, and particles of casein andnuclein susi)ended in the fluid. Human milk is alkaline; that ofcows, when quite fresli, either alkaline or amphoteric, though it isacid when it reaches the consumer. The quantity of milk secretedby a healthy woman varies very much, but, on the average, may beset down at a pint and a quarter to a pint and three-quarters in The figures are those given by Treves, Brit. Med. Journ., 1885, i., p. 415.^.See Anatomical
. Medical diseases of infancy and childhood. are minute oil globules, probably coated with proteid, a varying num-ber of small colorless cells without fat, and particles of casein andnuclein susi)ended in the fluid. Human milk is alkaline; that ofcows, when quite fresli, either alkaline or amphoteric, though it isacid when it reaches the consumer. The quantity of milk secretedby a healthy woman varies very much, but, on the average, may beset down at a pint and a quarter to a pint and three-quarters in The figures are those given by Treves, Brit. Med. Journ., 1885, i., p. 415.^.See Anatomical Constipation, p. 440. 52 THE STOMACH. 53 twenty-four hours. The ehief proteid eonstituents of milk are ease-inogen and laetalbumen. The former is the preeursor of easein,which is formed from it bv the action of rennet, a ferment secivtcdtreely by the stomachs of sucklings. At the same time some ^ * whey-proteid is formed and remains in -solution. This curdling does nottake place except in the presence of calcium salts (phosphate and Fig. \ nia^rram to illustrate thecapacitr of an infants stomach. A, The smallest outline represents- stomach of an infant, age 5 days (c-apacity 25 cc; less than 1 fl. ). ». The intermediateIt line repiesents the stomach of an infant, ape Vl months (eapacity riO cc; al>out 4 fl. oz.). C,!ie dotted oatline represents the dilated stomach of a rickety infant, age 7 months (capacity 300.; aboat 10 fl. or.). (All X %■) Afler ROTCil (Kentinpn r,/rtoptr,ii,i). Uloride) which, however, are natural constituents of milk. Inhuman milk the curd .separates out in fine flocculi. Laetalbumenolosely resembles serum all)umen. It is slowly coagulated at tem-jHratures l>etween 70° and S0° C. (in cows milk at 77° C. accord-ing to Halliburton). Milk is the product of the functional activityof the epithelium of the acini of the mammary gland, wliicli in theactive state of the gland are continually undergoing fatty change anddisintegration, lilnrating
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