et, meat was slowly added to
his dietary until he was receiving 60 grams of protein a day. There
was an immediate general improvement in his condition with no
increased renal disturbance. It is an obvious fact that chronic
nephritis, like any other chronic condition, requires a different
method of treatment from that practised to relieve the acute stage.
The very fact that it is chronic proves that the strenuous methods are
neither necessary nor wise.

~Testing the Kidney Functions.~--The authorities of to-day endeavor to
ascertain the extent of the damage to the renal organ by testing its
functioning power. These renal function tests have been the subject of
much interest and investigation. Probably the ones most commonly
employed are those devised by Hedinger and Schlayer[128] and adapted
for use in the Johns Hopkins Hospital by Mosenthal.

~Diets Used in Tests.~--The diet employed in making these tests
consists of different amounts of certain substances known to be
diuretic in character. This diet is rigidly adhered to and a careful
analysis of the urine passed, the total quantity and specific gravity
of each specimen made and in this way the various functions of the
kidneys and the impairment thereof are tested. Thus an intelligent
adjustment of the diet may be made.

~Renal Functional Tests.~--The following schedule is used by
Mosenthal, of the Johns Hopkins Hospital, in making what is known as
the "Two-Hour Test for Renal Function":

HEDINGER-SCHLAYER-MOSENTHAL DIET[129]

For _________________

Date _________________

All foods to be salt-free from the diet kitchen, salt
for each meal will be furnished in weighed amounts.[130]

All foods or fluids not taken must be weighed or
measured after each meal and charted in spaces below.
Allow no food or fluid at any time except at meal times.

Note any mishaps or irregularities that occur in giving
the diet or collecting the specimens.

Breakfast 8 A.M. Boiled oatmeal 100 grams
Sugar 1 to 2 teaspoonfuls
Milk 30 c.c.
2 slices of bread 30 grams each
Butter 20 grams
Coffee 160 c.c. }
Sugar 1 teaspoonful } 200 c.c.
Milk 40 c.c. }

Dinner--Noon Meat soup