476 



Dr. C. R. A. Wright and Mr. 0. Thompson. [Mar. 28, 



On plotting these numbers it becomes evident that whilst the solu- 

 bility curves of zinc in lead-tin and of lead in zinc-tin thence derived 

 are sensibly identical with those obtained from Series III, IV, and V, 

 the tin distribution curve is different from either of those obtained 

 with zinc and lead in the proportions 1 to 1 and 2 to 1. 



Fig. 4 represents the mean solubility curves (1) for zinc in lead-tin, 

 (2) for lead in zinc-tin, derived from all the foregoing observations 



