336 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



MINING AND MILLING (Continued) 



1667. Tregay, W. All about tin; an enquiry. 



Mg. Journ. Railw. Comm. Gaz., VoL 50, ISSO, London, pp. 49, 76, 105, 190, 221. 

 Treats of tin dressing. 



1668. Williams, R. H. Tin dressing and Williams's buddle. 



Mg. Journ. Railw. C!omm. Gaz., Vol. 47, 1S77, London, pp. 487-488, 6S4-6S5, 796. 

 Description of, and results obtained with Williaiiis's buddle. 



