304 



CENTEAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



1 





No. 9330. No. 9332. 



9325. 



No. 9334. 



No. 9338. 



No. 9342. 



TESTERS, Nafis, same as No. 9322, but for 9-inch cream test bottles. 



No A B 



For bottles, per cent 30 50 



Each $1.65 1.65 



TEST TUBES, Butter Fat Oil, plain, 9x% inches ; Per dozen 



TEST TUBES, Butter Fat Oil, with line 5 inches from bottom Per dozen 



TEST TUBES, Cream, heavy, for samples, 5x1*4 inches ... . .Fei dozen 



THERMOMETER, Dairy, standard, for those who wish a more accurate thermometer than the 

 ordinary. Hand-written paper scale, one degree graduation, accurate within one division of the 

 scale, weighted with shot and guaranteed to float upright. Ten inches long. Approximate scale 



range 10 to 110 Fahrenheit 2.40 



9340. THERMOMETER, Pasteurizing, with enclosed hand-written paper scale; approximate scale range 

 30 to 220 Fahrenheit; graduated in 2 divisions and accurate within one division of the scale. 



2.20 



9330. 

 9332. 

 9334. 

 9338. 



C 

 55 

 1.65 

 .90 

 .90 

 .90 



MILLS, see Crushing and Grinding Apparatus. 



9342. MINERAL COLLECTION, in wooden cases with covers, each specimen 

 with a label giving the name and locality. 100 specimens 5x6 cm.. 



LIST OF MINERALS INCLUDED. 



26. Quartz, Chalcedony. 51. Aragonite. 



27. Quartz, Agate. 52. Witherite. 



being in a pasteboard tray 

 35.00 



1. Graphite. 



2. Sulphur. 



3. Copper. 



4. Orpiment. 

 a. Stibnite. 



6. Molybdenite. 



7. Galena. 



8. Chalcocite. 



9. Sphalerite. 



10. Cinnabar. 



11. Millerite. 



12. Niccolite. 



13. Pyrrhotite. 



14. Bornite. 



15. Chalcopyrite. 



16. Pyrite. 



17. Cobaltite. 



18. Arsenopyrite. 



19. Halite. 



20. Fluorite. 



21. Cryolite. 



22. Quartz, Rock Crystal. 



23. Quartz, Amethyst. 



24. Quartz, Rose. 



25. Quartz, Smoky. 



28. Quartz, Flint. 



29. Quartz, Jasper. 



30. Opal, Semi-opal. 



31. Cuprite. 



32. Corundum. 



33. Corundum-Emery. 



34. Hematite crystal. 



35. Hematite compact. 



36. llmenite. 



37. Magnetite. 



38. Chromite. 



39. Braunite. 



40. Cassiterite. 



41. Rutile. 



42. Pyrolusite. 



43. Limonite. 



44. Bauxite. 



45. Calcite crystal. 



46. Calcite, Cleavage. 



47. Caleite-Marble. 



48. Magnesite. 



49. Siderite. 



50. Siderite-Clay Iron-Stone. 



53. Strontianite. 



54. Cerussite. 



55. Malachite. 



56. Orthoclase xld. 



57. Orthoclase-cleavage. 



58. Orthoclase-Sanidine. 



59. Oligoclase. 



60. Labradorite. 



61. Enstatite. 



62. Pyroxene. 



63. Wollastonite. 



64. Amphibole, Actinolite. 



65. Amphibole, Hornblende. 



66. Garnet. 



67. Crysolite. Olivine. 



68. Vesuvianite. 



69. Zircon. 



70. Andalusite. 



71. Cyanite. 



72. Epidote. 



73. Calamine. 



74. Tourmaline. 



75. Chabazite. 



76. Natrolite. 



77. Muscovite. 

 78i Lepidolite. 



79. Prochlorite. 



80. Serpentine. 



81. Talc, foliated. 



82. Talc soapstone. 



83. Sepiolite, Meerschaum. 



84. Kaolinite. 



85. Titanite. 



86. Apatite. 



87. Apatite. Phosphorite. 



88. Lazulite. 



89. Wavellite. 



90. Barite. 



91. Anglosite on Galena. 



92. Gypsum. 



93. Gypsum, Alabaster. 



94. Alunite. 



95. Wolframite. 



96. Ozocerite. 



97. Amber. 



98. Asphaltum. 



99. Anthracite. 

 100. Cannel Coal. 



9343. MINERAL COLLECTION, same as No. 9342, but 100 specimens 3x4 cm 23.00 



9344. MINERAL COLLECTION, same as No. 9343, but in pasteboard box instead of wooden case 18.00 



MINERALS FOR WIRELESS TELEGRAPHY. 



Per ounce. 



Bornite, pure 20 



Carborundum, crystals .15 



Chalcopyrites, with Iron Pyrites ... .10 



Chalcopyrites, pure .15 



Franklinite .10 



Galena, cubical 10 



Iron Pyrites, crystallized, radiated. .10 

 Iron Pyrites, crystallized, cubical.. .15 



Molybdenite 



Silicon, fused 



Stibnite, crystallized 



Zincite, 70 per cent 



Zincite, 100 per cent 



Rose's Metal, M. P. 203 F. . 

 Wood's Metal, M. P. 158 F. 



Per ounce. 



20 



20 



20 



40 



65 



30 



.30 



