,iif and Rosenhain. 



Phil. Trans., A, Vol. 193, Plati 27. 



Fig. 44. CADMIUM x 1000. 



Fig. 45. MILD STEEL x 1000. 



Fig. 46. LEAD-TIN EUTECTIC x 750. 



Fig. 47. LEAD-TIN ECTECTIC x 750. 



