In reviewing the literature concerning the peripheral lymphatic system, one discovers a relative lack of information with regard to its basic physiology, in terms of accurate measurements of peripheral intralymphatic pressure.
In 1933, Drinker and Field1 reported tying a glass T-tube into a lymphatic lying below the popliteal lymph node of the dog, attaching the tube to a manometer and measuring pressure in centimeters of water. The dog's foot was attached to a rotator which flexed and extended the limb at a rate of 73 times/minute. The pressures which were measured under these conditions were as follows: 41 cm of water after ten minutes and 68 cm of water after 40 minutes of exercise. They recorded no intralymphatic pressure with the animal at rest. In 1932, McMaster and Hudack2 measured the pressure indirectly in the lymphatics of the mouse's ear as 2-4 cm of water. They rendered the