Contributions to the history of the phosphorus-bases / by Augustus William Hofmann.

  • Hofmann, August Wilhelm von, 1818-1892.
Date:
1861
Catalogue details

Licence: Public Domain Mark

Credit: Contributions to the history of the phosphorus-bases / by Augustus William Hofmann. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

    25/136 (page 19)
    Fig. 15. Angles. Calculated. Observed. 10 0, 010 — o 90 i O 90 1 5 1 0 0, 001 — 56 49 56 49 10 0, 110 = 27 39 27 39 1 0 0, 10 1 = 114 2 114 2 010, 001 90 90 6 010, 110 = 62 21 62 21 0 1 0, 1 0 1 = 90 90 0 01, 110 — 61 60 55 0 01, To 1 = 57 13 57 13 11 o, T o l = 111 9 110 55 11 o, T l o — 124 41 124 42 According to Naumann : a : b : c=0-9205 : 1 : 1-5970; aob=y=56° 49'. Forms observed:— oo P oo, oo P co, 0 P, oo P, P oo . According to Weiss:— a:b: c= 1 : 1-5970 : 0-9205; aoc-123° 11'. Forms observed:— a : co b : co c; oo a : b : co c; oo a : cob : C', a : b : oo c; — a : cob : c. According to Levy :— MM=124° 41'; M P=119°; b : h=1 : 0-4885. Forms observed:— h1, g\ P, M, o'. The faces are all bright, with the exception of 101, which is frequently dull, and which, on account of this difference of lustre, may be easily distinguished from 0 01. The faces 10 0 and 110 exhibit delicate striae parallel to the edge of intersection. 3*