228 



Chapter XV 



the last chapter, between mesexy and normality. It is easy to ascer- 

 tain that the blood is abnormal, for it is known that such diet causes a 

 lowering of the carbonic acid pressure in the alveolar air which must 

 correspond to a reduced pressure of CO 2 in the blood, but it is also 

 known that organic acids appear in the urine which have come from 

 the blood. To what extent is the loss of carbonic acid in the blood 

 balanced by the gain in other acids so far as the total reaction of the 

 blood is concerned? 



Table of diets, &c. 



Date 



Sept. 5 

 Sept. 6 



Sept. 7 



Sept. 8 



Sept. 9 



Time 



12.30 



8.15 

 12.30 



7.30 

 10.00 



3.30 

 7.30 



8.00 



10.30 

 3.30 

 8.00 



Diet 



Beef stew and vegetables 



2 slices bread and butter 



No supper 



4 eggs 



1 cup beef tea 



1 tin sardines 

 6 ozs. cheese 



2 pork chops 



2 pieces pepsin gum 



3 ozs. butter 



4 eggs 



3 ozs. butter 



4 soft boiled eggs 



1 piece fried ham and a 

 little butter 



A few sips of coffee 



1 piece pepsin gum 

 Lemon juice 



2 lamb chops 

 1 box sardines 

 Beef steak 



No food taken till 12.00 when 

 ordinary diet was resumed 



Table of abnormal constituents in urine for 



24 hours, collected about 8 a.m. on the 



following morning 



NH 3 1-296 g. 



NH 3 /N 2 / 6 



Acetone 1-348 g. 



Oxybutyric acid 4-0845 g. 



Vol. 1120 c.c. 



N-, 18-084 g. 



NH 3 2-015 g. 



NH 3 /N 2 / 11-2 



Acetone 1-725 g. 



^-oxybutyric acid 1-577 g.* 



Vol. 1300 c.c. 



N, 18-933 g. 



NH 3 3-350 g. 



NH 3 /N 2 / 17-6 



Acetone 2-791 g. 



/3-oxybutyric acid 8-025 g. 



* Later work shows that these are minimal values. 



Here is an account of a complete experiment, with all the data of 

 urine, respiration, &c. set forth (pp. 228 and 230), and from it we see 

 that the alveolar carbonic acid pressures fell from 37 to 29'5 mm. of 

 mercury, the latter value being that observed on the fourth day of the 

 diet. On this day blood was taken for analysis and compared with that 

 found on the day before the special diet was commenced. The following 

 curve is Higgins' (Fig. 110 A) mesectic curve. The points marked by 



