The results obtained in this case, which were similar to results in other cases, are represented graphically in Fig. 32. The coagulation time was becoming gradually more prolonged, but each excitation of the sciatic nerve was followed by a marked shortening. The strength of stimulation was not determined with exactness, but it is worthy of note that the current used in the first and the third stimulations was weaker than could be felt on the tongue, whereas that used in the second was considerably stronger, though it did not produce reflex spasms. [Illustration: Figure 32.--Three shortenings of coagulation time after stimulation of the left sciatic nerve, at 4:23-:25, at 4:45-:50 (stronger), and at 5:15-:17.] Mere tying of the nerve is capable of producing a marked shortening of coagulation, as the following figures show: Oct. 21.--10.57 cat under ether, and urethane given: 11.11--8.5 minutes .23--8.5 “ .32 to .35 Left sciatic bared and tied. .37--1.5 minutes .41--5.5 “ .50--7 “ 12.02--8.5 “ Stimulation of the crural nerve had similar effects, reducing the clotting time in one instance from a succession of 3, 3, and 3.5 minutes to 1.5 minutes shortly after the application of the current, with a return to 3.5 minutes at the next test. Operative procedures performed under light anesthesia (i. e., with the more persistent reflexes still present), or reduction of anesthesia soon after operation, resulted in a remarkable shortening of the coagulation time: Nov. 8.--A cat was etherized and tracheotomized. The abdomen was then opened and a ligature was drawn around the hepatic nerves. The operation was completed at 2.25. At 2.50 the etherization became light and the rate of clotting began to be faster: 2.50--6 minutes 3.00--5.5 “ .10--3.5 “ .15--3.5 “ .20--4.5 “ .30--7.5 “ Nov. 11.--A female cat, very quiet, was placed in the holder at 1.55. The animal was not excited. At 2.10 etherization was begun; the animal was then tracheotomized, and the femoral artery was exposed. 2.21--4.5 minutes .26--4.5 “ Anesthesia lessened. .32--3.5 “ “ light. .35 Abdomen opened. .47--1.5 minutes. .52--1 “ .55 Ligature passed around hepatic nerves. .57--1.5 minutes. Anesthesia light; corneal reflex present. 3.02--3 “ .07--3 “ Some hepatic nerves cut. .12--4.5 “ Rest of hepatic nerves cut. .22--5 “ The results of this experiment are shown graphically in Fig. 33. [Illustration: Figure 33.--Shortening of coagulation time during an operation under light anesthesia. At 2:35 the abdomen was opened, at 2:55 a ligature was passed around the hepatic nerves.] Nov. 13.--A cat was etherized at 1.55, tracheotomized, and the femoral artery laid bare. As soon as these preparations were completed, the ether was removed and anesthesia became light. The blood clotted thus: