THE BEST COLLECTIONS OF MINERALS 



INCLUDE ONLY 



Thoroughly Typical Specimens of 

 Educational or Economic Importance. 



We regard an excellent collection sold at a low price 

 one of the best advertising investments we can make. 



COLLECTIONS ILLUSTRATING PHYSICAL PROPERTIES 



Iii no department of mineralogy is it so important to 

 have typical specimens as in physical mineralogy. Our 

 collections are sure to give satisfaction. 



Mo. 1. Structure and Form, results of imperfect crystallization. 16 large 



specimens mounted on cherry blocks, 312.00. 

 No. 2. Same, but specimens smaller and in pasteboard trays, $6 00. 

 No. 3. Cleavage, 5 large specimens, mounted on cherry blocks, $1.25. 

 No. 4. Same, but specimens smaller and in pasteboard trays, 75c. 

 No 5. Fracture, 6 large specimens mounted on cherry blocks, $3.00. 

 No. 6. Same, but specimens smaller and in pasteboard trays, $1.50. 

 No. 7. Tenacity, 5 large specimens mounted on cherry blocks, $2.50. 

 No. 8. Same, but specimens smaller and in pasteboard trays, $1.25. 

 No. 9. Scale of Hardness, 9 large specimens and Diamond crystal, mounted 



on cherry blocks, $10.00. 

 No. 9a. Same, but with smaller Diamond, $5.00. 

 No. 10. Same, but specimens smaller and in pasteboard trays, S3. 50. 

 No. 10a. Same as No. 10, omitting the Diamond, $2.50. 



No. 11. Same, 10 specimens in handsome quartered oak box with 1-| inch com- 

 partments, $1.50. 

 No. 11a. Same as No. 11, omitting the Diamond, 75c. 



No. lib. "Elite : " Scale of Hardness, 10 specimens, all, except talc, in crystals, 



• enclosed in pocket-size leatherette case lined with velvet and satin, $1.50. 



No. 12. Specific Gravity, or Density, 40 specimens, mounted on cherry 



blocks, $25.00. 

 No. 13. Same, 25 specimens, mounted on cherry blocks, $15.00. 

 No. 14. Same as No. 13, but specimens small and included in quartered oak box 



with one inch compartments, $7.50. 

 No. 15. Luster, 15 large specimens, mounted on cherry blocks, $7.50. 

 No 16. Same, but specimens smaller and in pasteboard trays, 83.75. 

 No. 17. Same, H most important specimens in No. 15, mounted on cherry 



blocks, 83.50. 

 No. 18. Same as No. 17, but specimens smaller and in pasteboard trays, $1.75. 

 No. 19. Color, 56 large specimens, mounted on cherry blocks, $28.00. 

 No. 20. Same, but specimens smaller and in pasteboard trays, $14.00. 

 No. 21. Same, 25 of most important specimens, mounted on cherry blocks, $12.00. 

 No. 22. Same as No. 21. but specimens smaller and in pasteboard trays, $6.00. 

 No. 23. Diaphaneity, 5 large specimens, mounted on cherry blocks, $2.50. 

 No. 24. Same, but specimens smaller and in pasteboard trays, $1.00. 

 No. 25. Scale of Fusibility, 6 large specimens, mounted on cherry blocks, 



S2.50. 

 No. 26. Same, but specimens smaller and in pasteboard trays, $1.00. 

 No. 27. Same. 6 specimens in quartered oak box with 1-| in. compartments, 60c. 

 Other Physical Collections will be announced later. 

 124-page Illustrated Catalogue, giving Dana Species number, crystal sys- 

 tem, hardness, specific gravity, chemical composition and formula of every min- 

 eral, 25c. in paper. 

 44-page Illustrated Price -Ltsts, also Bulletins and Circulars, free. 



GEO. L. ENGLISH & CO., Mineralogists, 



Dealers in Educational and Scientific Minerals, 

 3 AND 5 WEST 18th STREET, NEW YORK CITY. 



