Bananas and sugar were given in several experiments, as considerable amounts could be consumed and the total energy intake in the form of carbohydrate thus be greatly increased. The results of 7 experiments follow; the experiments with A. L. L., H. R. D., and A. H. M. were made in Middletown, and those with J. J. C. and F. M. M. in Boston.

A. L. L., March 30, 1906 (765 Grams Bananas And 99 Grams Sugar, With A Total Fuel Value Of 1,109 Calories)

A very large increase in the carbon-dioxide production was found in the first period, this being decreased about one-half in the second period. (See table 110.) In the last two periods the amount was essentially the same as the basal value. There was an increase of 17 grams in the oxygen consumption in the first period with practically basal values thereafter. The heat production showed a large increase for the first two periods, but the values were essentially the same as the basal in the last two periods. The respiratory quotients were extraordinarily high and characteristic of those following carbohydrate ingestion. In this experiment, therefore, there was a somewhat closer uniformity between the gaseous metabolism and heat production than in many of the earlier experiments. All of the factors indicate a considerable increase in the actual metabolic processes.

Table 110. - A. L. L., March 30, 1906. Sitting. (2-Hour Periods). Bananas And Sugar

Amounts, 765 grams bananas, 99 grams sugar; nitrogen, 1.58 grams; total energy, 1,123 cals. Fuel value: Total, 1,109 cals.; from protein, 3 p. ct.; from fat, 4 p. ct.; from carbohydrates.

93 p. ct. Nitrogen in urine, 0.73 gram per 2 hours. Basal values (April 3 and 6, 1906): CO2, 47 grams; O2, 43 grams; heat, 145 cals.

1Subject ate food in 31 minutes.

H. R. D., March 31, 1906. (1,173 Grams Bananas And 103 Grams Sugar, With A Total Fuel Value Of 1,562 Calories)

The data given in table 111 show large increases in the carbon-dioxide excretion over the basal value in the first three periods. There was a concordant increase in the oxygen consumption and an increment in the heat production We thus have here practically the same picture with all three factors of metabolism, indicating an increased metabolism following the ingestion of bananas and sugar.

Table 111. - H. R. D., March 81, 1906. Sitting. (2-Hour Periods). Bananas And Sugar

Amounts, 1,173 grams bananas, 103 grams sugar; nitrogen, 2.43 grams; total energy, l,583 cals. Fuel value: Total, 1,562 cals.; from protein, 4 p. ct.; from fat, 4 p. ct.; from carbohydrates 92 p. ct. Nitrogen in urine, 0.78 gram per 2 hours. Basal values (February 6 to April 20, 1906): CO2, 47 grams; 02, 42 grams; heat, 146 cals.

1Subject ate food in 27 minutes.

A. H. M., April 2, 1906 (1,121 Grams Bananas And 86 Grams Sugar, With A Total Fuel Value Of 1,448 Calories)

The values for both the carbon-dioxide excretion and the heat production recorded in table 112 indicate an increase in all of the periods of this experiment; the oxygen consumption also showed an increment in the first three periods. The respiratory quotients were in all cases high, the first quotient being above 1. A fairly uniform picture of increased metabolism was thus shown throughout the entire observation.

Table 112. - A. H. M., April 2, 1906. Sitting. (2-Hour Periods). Bananas And Sugar

Amounts. 1,121 grams bananas, 86 grams sugar; nitrogen, 2.34 grams; total energy, 1,468 cals. Fuel value: Total, 1,448 cals.; from protein, 4 p. ct.; from fat, 4 p. ct.; from carbohydrates, 92 p. ct. Nitrogen in urine, 0.79 gram per 2 hours.1 Basal values (February 12 and 14, 1906): CO2, 45 grams; O2, 40 grams; heat, 142 cals.

1Sample included amount for about 1 3/4 hours preceding the eating of food. 2Subject ate food in 27 minutes.