A. A. Day

Role of the intestinal bacteria in the decomposition of pectin.

Conclusion The results show that pectin is decomposed by bacteria present in feces obtained from human and canine subjects on a normal diet and one after pectin had been added.

Effect of Diathermy on Concentration of Complement and Normal Opsonins.

Summary Diathermy did not produce a significant change in complement concentration nor in opsonic index within the limits of this investigation. It is apparent that a complete report can come only from a large number of cases with frequent tests at selected times.

Effect of Dinitrophenol on Agglutinin and Complement Titer

Summary Subcutaneous administration of dinitrophend in varying amounts from 10 nig. to 24 mg./k., over a period of 37 days, had no apparent effect on the production of agglutinins for B. pnmfgpltoszu I3 in rahbits. Large amounts, 30 to 40 mg. per kilo, sufficient to increase the temperature several degrees, did not significantly alter the agglutinin-titers. Similar large doses given after a rest period of from 4 to 11 months failed to cause a secondary rise in titer except in one instance. A very slight decrease in complement-content took place in 2 of 3 experiments following large doses of dinitrophenol. The above results did not encourage more extensive investigation.