Part 21

*41 Conglomerate: Breccia *42 “ Pudding-stone *43 Sand: Quartz °44 “ Magnetite *45 Sandstone: Ferruginous 46 “ Calcareous 47 “ Arkose *48 Quartzite 49 Clay: Boulder °50 “ Fire *51 Shale *52 “ Carbonaceous 53 Slate: Roofing 54 “ Flagstone 55 Porcelainite 56 Tripolite °57 Siliceous Tufa 58 Novaculite °59 Asphaltum °60 Oil Sand *61 Limestone: Fossiliferous *62 “ Coquina *63 “ Chalk 64 “ Crystalline °65 “ Compact 66 “ Hydraulic 67 Calcareous Tufa 68 Dolomite 69 Rock Salt °70 Phosphate Nodule *71 Gneiss: Granitoid *72 “ Micaceous 73 “ Hornblendic °74 Norite: Hypersthenite *75 Schist: Mica 76 “ Hornblende 77 “ Talc 78 “ Chlorite 79 Amphibolite 80 Soapstone 81 Verd Antique (Serpentine)

Igneous Rocks

*82 Granite: Binary 83 “ Muscovite *84 “ Biotite 85 “ Hornblendic 86 “ Red *87 Syenite 88 “ Elæolite *89 Diorite *90 Diabase: Trap *91 Rhyolite 92 Trachyte *93 Obsidian 94 Pumice °95 Petrosilex *96 Andesite *97 Basalt 98 “ vesicular Lava *99 Melaphyr: Amygdaloidal °100 Volcanic Tuff

Collection No. F1. Entire list of 100 museum size specimens (3¼ × 4¼), numbered, labelled and mounted on blocks or in improved trays, for museum display and laboratory work $40.00

(The same, labelled but unmounted, $30.00)

Collection No. F2. Same as above, but small museum size, mounted in improved trays (2½ × 3½) $25.00

Collection No. F3. Same as F2, but hand size specimens (2 × 2) 12.50

Collection No. F4. 80 specimens, omitting those marked (°), in individual trays (2½ × 1¾) and two cloth-board cases, numbered to correspond with accompanying printed list (no labels) 5.00

Collection No. F5. 40 specimens marked (*), mounted as collection F4 2.50

Collection No. F6. 100 pupils’ fragments (1 × 1), numbered, in paper bags. (Single collection $1.25.) In lots of 5 or more, each 1.00

Collection No. F7. 80 pupils’ fragments (like F6). (Single $1.00.) In lots of 5 or more, each .75

Collection No. F8. 40 pupils’ fragments (like F6). (Single 50c.) In lots of 5 or more, each .40

Collection No. F9. 25 museum size specimens, illustrating structure, faults, stratification, etc. Mounted and labelled 10.00

For further information or in ordering, address

WARD’S NATURAL SCIENCE ESTABLISHMENT 84-102 College Ave., Rochester, N. Y.

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Transcriber’s note:

Specimen numbers have been regularised as medium weight.

Page 7, ‘LeConte’ changed to ‘Le Conte,’ “By Prof. Joseph Le Conte.”

Page 12, ‘contined’ changed to ‘continued,’ “continued exposure to the”

Page 28, comma changed to full stop, “associated with beds of coal.”

Page 34, ‘or’ changed to upright, “superficial or aqueous agencies”

Page 96, all instances of ‘per cent’ changed to ‘per cent.’: “60 per cent.”, “30 per cent.”, “85 per cent.”

Page 97, full stop inserted after ‘crust,’ “of the earth’s crust. The name”

Page 105, specimen number absent in original.

Page 106, ‘green sand’ changed to ‘greensand,’ “greensand, and serpentine”

Page 107, ‘magnesion’ changed to ‘magnesian,’ “the entire rock is magnesian,”

Page 108, ‘70’ changed to ‘69,’ “classification on page 69”