48 A. K. Macbeth on Speeding-up of Chemical Reactions 



the harmonious working of natural catalysts and the discordant 

 work of artificial agencies. 



The lecture was illustrated by experiments and lantern 

 slides, and at the close on the motion of the Chairman a hearty 

 vote of thanks was passed to the Lecturer, and to Mr. J. K. 

 Marsh, B.Sc, who assisted with the experiments and the lantern. 



i 



