only illnesses recorded for these babies are one case of whooping cough and one of thrush. b. Effects of Disease. The number of serious illnesses is much greater than for the white boys. There are 12 cases of pneumonia recorded, four times as many as for the white boys, and of those eight died. Six others died from diseases which are not recorded for the white babies, such as cholera infantum, tuberculosis, lues, and marasmus. The effect of the more common diseases, such as diarrhea, bronchitis, eczema, whooping cough, measles, and WEIGHT IN GRAMS constipation is practically the same as for the white boys, loss of weight is very similar and recovery is equally rapid. 6. INDIVIDUAL AND AVERAGE GROWTH CURVES OF WHITE MALE AND FEMALE BABIES The three boys whose weight curves are given in Chart III are taken from the group of 100 whose averages have been given on page 39. Their measurements extend over the year period in most cases, but the curves have been limited to 52 weeks' measurements on the same individuals at more or less regular intervals. Chart III The heaviest boy (1), of Hebrew parentage and a twin, weighed 3288 grams at birth and grew in a normal healthy manner until the end of the year, when he weighed 11,113 grams. There was a slight drop in weight after August. He was breast fed with a milk formula at six months and some solid food at nine months. At the end of the year he was taking soft food and the breast. There were no intercurrent illnesses during the year. There were eight living children, all breast fed. The father was 40, the mother 38 years of age. The second boy (2), a Russian Hebrew, also shows good healthy growth in weight. His birth weight was 2948 grams, and he was breast fed during the year, with a soft diet at 12 months, and there were no intercurrent illnesses. At 12 months he weighed 10,087 grams. This boy also shows a slight falling off in weight after 24 weeks (August-September). At the end of the year his diet consisted of milk, soup, zwieback, and oatmeal. The father was 28 and the mother 26 years of age and there were two living children, breast fed. The third boy (3) is also of Russian descent. His weight at birth is not recorded, but at the end of the second week he weighed 3062 grams. He had an abscess in the right axilla at four weeks, and suffered from constipation at nine weeks, bronchitis at 24 weeks and acute coryza at 40 weeks. After 32 weeks he was fed cereal every three hours, the breast feeding having been discontinued. The father was 27 and the mother 21 years of age. This was the only child. The girls' curves of growth in weight (Chart III page 44) are slightly below those of the boys and are slightly more irregular. Number (1), of German descent, weighed 3402 grams at birth and 10,659 grams at the end of the year. She was breast fed for eight months, after which a cow's milk formula was used. She had no intercurrent illness and was the only child of young parents, aged 22 and 23 respectively. The second child (2), of American parentage, shows a relatively high weight at the third week, the birth weight being unknown. At the end of the eighth week the mother's milk was exhausted and cow's milk was substituted. The child never regained its relative position in weight. There was no illness during the year. The father and mother were 28 and 29 years old respectively. The third girl (3), of German Hebrew parentage, was given con densed milk from the first, as "the mother's milk did not agree with the baby." Later cow's milk and at seven months broth, zwieback, and cereal were given. She had no intercurrent illnesses. Growth is steady and uniform, although the child is relatively light. Both parents were 27 years old and there were no other children. In this group of babies there is a wider range of distribution than with the previous group. No. (1) of American descent, is a large, fat boy, weighing 4536 grams at birth and 11,567 grams at the end of the 52 weeks. He was breast fed and had no illness except diarrhea at 28 weeks, followed by a slight loss in weight. He was breast fed with supplementary cereals and soft food after 32 weeks. The father was 32 years of age and the mother 28. There was an older child. The second boy (2), a Russian Hebrew, weighed 2948 grams at birth. While he was small, growth was good for the first 30 weeks, when there began a slight diminution. No diseases were present during the year. He was breast fed for nine months, with cereal and zwieback, beginning at six months, broth and eggs at nine months and soft food at 12 months. The father was 20 and the mother 19 years of age and this was the only child. The largest girl (1) was large at birth, weighing 5216 grams, with a subsequent history of bronchitis at 23 weeks, rhinopharyngitis at 40 weeks and ilio-colitis at 52 weeks. She was breast fed for the first 16 weeks, when cow's milk was substituted, followed by cereals and finally protein milk. The child was not taken for observation until 12 weeks (June 27th) when it weighed 5727 grams, having gained but 510 grams during the period of 13 weeks. The value of subsequent observations and directions is self-evident. There were four children, two of whom had died in infancy. The parents were 33 years old respectively. The second girl (2), of German Hebrew descent, weighed 3402 grams at birth and 9129 grams at the end of the year. She was breast fed for seven months, was then given cereals and broth and later soft food. There is a dropping off in the relative weight after the 24th week (August 26th). She was the only child of parents aged 29 and 26 respectively. The smallest girl (3), of American descent, weighing 1814 grams at birth, was immediately brought to the Station at the end of the first week and grew rapidly until an acute illness at 34 weeks. This girl was breast fed for eight weeks, when the mother's milk failed WEIGHT IN GRAMS and condensed milk was substituted. There were three children of whom one, bottle fed, died. The father was 30 years of age and the mother 29. 7. INDIVIDUAL AND AVERAGE GROWTH CURVES OF COLORED MALE AND FEMALE BABIES In this group of three colored boys, the measurements in weight extend, like those of the white boys, from birth to 56 weeks but the number of regular observations is less except in the case of the third. The birth weight of the largest (1) was not known, but at |