The following chemical studies were carried out: following up of the blood sugar picture (continuous); the sodium chloride picture in the serum; the nonprotein nitrogen (Rest-N); the alkali reserve; the alkali reserve of the venous and arterial blood and sedimentation rate (before and after the experiment). Besides this the general blood condition and viscosity were followed during the experiment, and before and after the experiment the resistance of the red blood cells and the protein content of the blood plasma (this refractometrically) were measured.
The following urinalyses were made regularly: sediment, albumen, sugar, sodium chloride, acetone, acetic acid, as well as a qualitative albumen determination.
In part of the experiment lumbar and suboccipital punctures were made as well as corresponding spinal fluid studies.
Among physical and therapeutic measures the following were tested:
a. Rapid warming by means of a hot bath.
b. Warming by means of a light cradle.
c. Warming in a heated sleeping bag.
d. Vigorous massage of the whole body.
e. Wrapping in covers.
f. Diathermy of the heart.