Catalogue of Museums. 



H4 — Garnet crystals, large, imbedded in slate. 



Harney Peak district, Black Hills, Dakota. 

 85 — Garnet Crystals, smaller, imbedded in slate. 



Pine Camp, Harney Peak region, Black Hills, Dakota. 



86 — Garnet crystals, small and numerous. 



Taken from sands in the bed of stream in Harney 

 Peak region, Black Hills, Dakota. 

 87 — Tourmaline crystal, black. Large specimen. 



Harney Peak region, Black Hills, Dakota. 



88 — Tourmaline crystal, black. Large specimen. 



Hai ey Peak region. Black Hills, Dakota. 



^'9 90 — Black Tourmaline crystals in Mica. 



Harney Peak region, Black Hills, Dakota. 



91-95 — Green Tourmaline crystals in Mica. 



Ingersoll mine, Harney Peak region, Black Hills, 

 Dakota. 



96 97 — Black Tourmaline acicular crystals, in fine gangue. 



Harney Peak region, Black Hills, Dakota. 



98 — Larger black Tourmaline crystals in tine gangue. 



Harney Peak region, Black Hills, Dakota. 



99 — Tourmaline crystals in white quartz. 



Black Hills, Dakota. 

 100 101 — Tourmaline crystals in Greisen rock. 



102 103— Rose Quartz. 

 104— Milky Quartz. 



Black Hilis, Dakota. 



Black Hills, Dakota. 

 Black Hills, Dakota. 



105 — Rock crystal. Transparent. 



Black Hills, Dakota. 



106 — Drusy Quartz. Aggregated crystals. 



These are peculiar, spongy and coralloid clusters. 

 Wind Cave, South of Dead wood, Black Hills, Dakota. 



107-109 — Drusy calcite, Aggregated crystals. 



Wind Cave, Black Hills, Dakota. 



