Riess, Ber., 1909, 42, p. 39 0 5.
Palmer, Ber., 1889, 22, p. 15; 1890, 23, p. 3810; 1891, 24, p. 2090; Zeit.
The atomic weight of the element has been determined by analysis.
Pinner, Ber., 1893, 26, p. 2125).
Tafel, Ber., 1900, 33, p. 3385), and by the condensation of acrylic acid with urea at 210-220° C. (E.
Fischer, Ber., 1901, 34, p. 3759).
Gerngross, Ber., 1905, 3 8, p. 3394).
Traube, Ber., 1900, &c.; 0.
- 1, 00 March, April, Septem ber and October at so Kew are assigned to 110 " Equinox."
His archaeological work included the investigation of lake dwellings and other prehistoric structures; he went with Schliemann to Troy in 1879, fruits of the expedition being two books, ZurLandeskunde der Troas (1880) and Alt-trojanische Gr p ber and Schad (1882); in 1881 he visited the Caucasus, and on his return published Das Graberfeld von Koban im Lande der Osseten; and in 1888 he accompanied Schliemann to Egypt, Nubia and the Peloponnese.
In 1889 the association of the " Union Civica " was founded, and the organization undertaken by Dr Leandro Alem, Dr Aristobulo del Valle, Dr Ber nardo Irigoyen, Dr Vicente Lopez, Dr Lucio Lopez, Dr Oscar Lilliedale and other leading citizens.
Shadwell, Ber., 1878.
Manasse, Ber., 1887, 20, p. 2196).
Hofmann, Ber., 188 2, 1 5, p. 977), by the partial hydrolysis of the nitriles, by the action of ammonia or ammonium carbonate on acid chlorides or anhydrides, or by heating the.
Tafel, Ber., 1890, 23, p. 104).
Claus, Ber., 1873, 6, p. 723); by passing aniline vapour over lead oxide, or by the oxidation of dihydrophenazine, which is prepared by heating pyrocatechin with orthophenylene diamine (C. Ris, Ber., 1886, 19, p. 2206).
Nietzki, Ber., 1895, 28, p. 2976; O.
Theodorovits (Ber., 1905, 3 8, P .
Pictet and P. Genequand, Ber., 1897, 30, p. 2117).
Blau, Ber., 1893, 26, p. 631).
Pictet and P. Crepieux (Comptes rendus, 1903, 137, p. 860) and Pictet and Rotschy (Ber., 1904, 37, p. 1225):, -aminopyridine is converted into its mucate, which by dry distillation gives N-13-pyridylpyrrol.
Wagner, Ber., 1888, 21, p. 1231), or by the action of nitrous acid on the diamines.
Nagel (Ber., 1898, 31, p. 2009), this oxide does not exist, the reaction leading to the formation of an hydroxide according to the equation: Mo 3 C1 4 (OH) 2 + 4KHO 3H 2 O = 3Mo(OH) 3 -l-4KBr+3H.
Nagel (Ber., 1898, 31, p. 2009) show the salt to possess the composition Mo 3 C1 6.
The Russian plant-anatomist, Russow, may be said to have founded the consideration of plant tissues from the point of view of descent (Vergleichende Untersuchungen ber die Leilbundelkryptogamen, St Petersburg, 1872; and Betrachtungen ber Leitbndel und Grundgewebe, Dorpat, 1875).
Leeds, Ber., 1881, 14, p. 976).
Henriques, Ber., 1888, 21, p. 1620).
Doebner, Ber., 1891, 24, p. 1 755).
Cohen, Ber., 1884, 17, p. 2188).
Pechmann, Ber., 18 9 5, 28, p. 857); by distilling anisic acid (paramethoxy benzoic acid) with baryta or by boiling phenyl diazonium chloride with methyl alcohol.
Hantzsch (Ber., 1901, 34, p. 3337) has shown that in the action of alcohols on diazonium salts an increase in the molecular weight of the alcohol and an accumulation of negative groups in the aromatic nucleus lead to a diminution in the yield of the ether produced and to the production of a secondary reaction, resulting in the formation of a certain amount of an aromatic hydrocarbon.
Vortmann (Ber., 1890, 23, p. 2 753) dissolve phenol in caustic alkali, make the solution up to known volume, take an aliquot part, warm it to 60° C., and add decinormal iodine solution until the liquid is of a deep yellow colour.
Biltz (Ber., 1888, 21, p. 2013; 1901, 34, p. 2490) showed that the vapour density decreased with the temperature, and also depended on the pressure.
At the same time a little trioxide is formed, and, according to Hempel (Ber., 1890, 2 3, p. 1 455), half the sulphur is converted into this oxide if the combustion be carried out in oxygen at a pressure of 40 to 50 atmospheres.
Rhombic sulphur may be obtained artificially by slowly crystallizing a solution of sulphur in carbon bisulphide, or, better, by exposing pyridine saturated with sulphuretted hydrogen to atmospheric oxidation (Ahrens, Ber., 1890, 23, p. 2708).
Rend., 1888, 106, p. 1357.) The gas may be liquefied by a pressure of about 17 atmospheres, the liquid so obtained boiling at - 61.8° C.; and by further cooling it yields a solid, the melting point of which is given by various observers as - 82° to - 86° C. (see Ladenburg, Ber., 1900, 33, p. 6 37).
Ruff and Fischer (Ber., 1903, 36, p. 418) did not appear to exist, but E.
Phys., 1838, (2), 69, p. 170), by the action of chlorine on a mixture of ethylene and sulphur dioxide, may also be obtained by the direct union of sulphur dioxide and chlorine (especially in the presence of a little camphor); and by heating chlorsulphonic acid in the presence of a catalyst, such as mercuric sulphate (Pawlewski, Ber., 18 97, 3 0, p. 765): 2S0 2 C1.
It is a colourless fuming liquid which boils at 152-153° C. When heated under pressure it decomposes, forming sulphuric acid, sulphuryl chloride, &c. (Ruff, Ber., 1901, 34, p. 35 0 9).
Considerable controversy arose as to the constitution of the salts of this acid, the formula of sodium salt, for example, being written as NaHSO 2 and Na 2 S 2 O 4; but the investigations of C. Bernthsen (Ann., 1881, 208, p. 142; 1882, 211, p. 285; Ber., 1900, 33, p. 126) seem to decide definitely in favour of the latter (see also T.
Price, Ber., 1902, 35, p. 291; Journ.
Villiger, Ber., passim.
Michaels (Ber., 1897, 30, p. 1383) by distilling thebenol over zinc dust in a stream of hydrogen, or by the action of hydriodic acid and phosphorus at 220° C. on thebenol.
On a painted vase the scene of the intercession of Heracles is represented (Heydermann, ZI ber eine nacheuripideische Antigone, 1868).
Silberrad (Ber., to be a dihydro HC NH N --> 1V NH CH.
Cantor, Vorlesungen i ber Geschichte der Math., ii.
In the same year (1812) he first appeared as an author by the publication of his monograph II ber den Kaiser Julianus and sein Zeitalter.
Gruppe, U ber d.
In contact with chlorine monoxide it forms carbonyl chloride and thionyl chloride (P. Schiitzenberger, Ber., 1869, 2, p. 219).
Jovitschitsch, Ber., 1897, 3 o, p. 135).