Publisher's Synopsis
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1825 edition. Excerpt: ... CHARACTERS OF THE CLASSES, ORDERS, GENERA, AND SPECIES. CHARACTERS OF THE CLASSES. CLASS I. G. under 8-8. No bituminous odour. Solid: taste. CLASS II. G. above 1-8. Tasteless. CLASS III. G. under 1-8. Fluid: bituminous odour. Solid: no taste. CHARACTERS OF THE ORDERS. CHARACTERS OF THE ORDERS OF CLASS I. I. Order. GAS. G. = 0-0001 ... 0-0014. Expansible. Not acid. II. Order. WATER. G. = 10. Liquid. Without odour or taste. III. Order. ACID. G. = 00015 ... 3-7. Acid. IV. Order. SALT. G. = 1-2 ... 2-9. Solid. Not acid. CHARACTERS OF THE ORDERS OF CLASS II. I. OaDER. HALOIDE. Non-metallic. Streak uncoloured. H. = 1-5 ... 5-0. G. = 2-2 ... 3-3. Pyramidal or prismatic: H. = 40 and less, cleavage imperfect, in oblique directions. Tessular: H. = 4-0. Cleavage monotomous, eminent: G. = 2-4 and less. H. under 2-5: G. = 2-4 and less. G. = 2-4 and less: H. under 2-5, no re- sinous lustre. II. Oider. BARYTE. Non-metallic. Streak uncoloured or orange-yellow. H. = 25 ... 6-0. G. = 33 ... 7-3. Cleavage monotomous: G. = 4-0 and less; or = 5-0 and more. Lustre adamantine or imperfect metallic: G. = 50 and more. Streak orange-yellow: G. = 60 and more. H. = 50: G. under 4-5. G. under 4-0; and H. = 5-0: cleavage di- prismatic. III. Ohder. REBATE. Non-metallic. Streak uncoloured. Cleavage not monotomous, not perfect peritomous. H. = 1-0... 20. G. above 55. IV. Ohder. Malachite. Non-metallic. Colour blue, green, brown. Cleavage not monotomous. H. = 20 ... 5-0. G. = 20 ... 4-6. Colour or streak brown: H. = 30 and less, G. above 2-5. Streak blue: H. = 40 and less. Streak uncolourcd: G. = 22 and less, H. under SO. V. Ohdeh. MICA. Cleavage monotomous, eminent H. = 10 ... 4-5. G. = 1-8 ... 32. Metallic: G. under 2-2. Non-metallic: G. above 2-2. H. =...
