Comparison of Blood-flow in the Hands. 
45 
Taking the water equivalent of hand and calorimeter together 
as 300 grm. and the loss of heat by the calorimeter as 0.01 0 per 
minute, we get for the left hand H = 2,508 small calories; T = 
37.4; V (average temperature of the calorimeter) = 27.96. Tak- 
ing the specific heat of blood as 0.9, we get 
2508 10 
f = g ^~ X — = 296 grm. blood 
in ten minutes, i. e., 9.0 grm. blood per minute per 100 c.c. of hand. 
For right hand y = 354 grm. blood in ten minutes, i. e. y 9.6 
grm. blood per minute per 100 c.c. of hand. 
Case 2. — A boy 9 years and 4 months old. Normal delivery, no instruments 
used. At the age of one month the child had convulsions. At 6 months the mother 
noticed disability in the left arm and left leg. The arm has since become flaccid, 
and the whole arm is atrophied. The upper arm can only be raised level with the 
shoulder. Some power of flexion of the forearm at the elbow but hardly any power 
of rotation. The hand is held pronated and everted toward the ulnar side and the 
fingers are extended. They are small and cold. There is some power of flexion of 
the middle, ring and little fingers but very little in the case of the thumb and index 
finger. Movements at wrist very slight. 
Diagnosis: infantile paralysis. 
Protocol of Experiment. 
At 2— 11— 30" P.M. Both hands put in bath at 26.6 0 . 
2.19 Temperature of bath is 26.5 0 . 
At 2.19 Put hands into calorimeters, each containing 2,800 c.c. 
water. (These were somewhat smaller calorimeters 
than those employed for case i.) 
Patient standing. 
Calorimeter containing Calorimeter containing 
left hand. right hand. 
2.20 26.32 26.40 
2.21 26.36 26.45 
2.22 26.4O 26.55 
2.23 26.53 26.70 
2.24 26.54 26.80 
2.25 26.54 26.85 
2.26 26.55 26-95 
2.27 26.60 27.05 
2.28 26.61 27.IO 
2.29 26.65 27.20 
2.30 26.65 27.3O 
The last readings were taken after vigorous stirring immediately after removal 
of the hands from the calorimeters. 
Cooling of Calorimeters after Withdrawal of Hands. 
Left. Right. Room. 
2.43 26.60 27.20 23.4 
Pulse 95 in standing position. Rectal temperature 37-6°. 
Volume of left hand in calorimeter 170 c.c. 
Volume of right hand in calorimeter 210 c.c. 
The hands being small, portions of the arms were included. 
