Examination for Thallium and Indium. 219 



5. Zink blende. Eaton, New Hampshire. 



This blende contained considerable lead with manganese and 

 lime, but no thallium or indium. 



G. Zink blende. Phenixville, Pennsylvania. 

 Here also manganese was found, but no thallium or indium. 



7. Zink blende. Stirling, New Jersey. 



This blende yielded lime and. manganese. No thallium or 

 indium. 



8. Zink blende. Galena, Illinois. 



Remarkably free from foreign substances, with no trace of 

 thallium or indium. 



9. Zink blende. Colorado. 

 Contained copper and manganese. No thallium or indium. 



10. Zink blende. Rockland County, New York. 

 Yielded no trace of thallium or indium. 



11. Zink blende. Island of Cuba. 

 Showed copper, but no thallium or indium. 



12. Zink blende. Ancram, New York. 

 Contains manganese and copper ; no thallium or indium. 



13. Deweylite. Pennsylvania. 

 This mineral, according to some analyses, contains zink, and 



