TITLES OF PAPERS PRESENTED 165 



ORIGIN OF THE COLEMANITE DEPOSITS OF CALIFORNIA 



BY W. F. FOSHAG 



HYDROUS TALGS 



BY W. F. FOSHAG AND E. T. WIIERUY 



DIAMONDS OF PIKE COUNTY, ARKANSAS 



BY GEORGE F. KUNZ 



ALLEMONTITE FROM BRITISH COLUMBIA; SKUTTERNDITE FROM COBALT, 



ONTARIO 



BY T. L. WALKER 



NOTES ON ISOMORPHISM 



BY E. T. WHERRY 



ORIENTITE FROM CUBA 



BY D. FOSTER HEWETT AND EARL SHANNON 



SIMPLE METHOD OF DETERMINING REFRACTIVE INDICES OF LIQUIDS WITH 



THE MICROSCOPE 



BY OTTO VON SCHLICHTEN 



OCCURRENCE OF COSALITE IN ONTARIO 



BY T. L. WALKER 



CRYSTAL HABIT OF ORTHOCLASE FROM PENTICTON, BRITISH COLUMBIA 



BY T. L. WALKER 



MINERALOQRAPHIC STUDY OP ANIMIKITE AND MACFARLANITE FROM 

 SILVER ISLET, LAKE SUPERIOR 



BY A. L. PARSONS AND E. THOMSON 



CALCITE PROM SHANOOINAH ISLAND, LAKE SUPERIOR 



BY A. L. PARSONS 



NEW SIMPLIFIED METHOD FOR DRAWING CRYSTALS 



BY C. D. SLAWSON 



SIGNIFICANCE OF CRYSTAL HABIT 



BY E. T. WHERRY 



HEMATITE CRYSTAL FROM MANTON, RHODE ISLAND 



BY A. C. HAWKINS 



