354 
Wisconsin Academy of Sciences , Arts and Letters. 
(“camphre artificiel”) could be applied on account of its camphor like 
odor. The dipentene dihydrochloride, which has not the least resemb¬ 
lance with natural camphor could be called “camphre artificiel de 
citron” only because it was prepared from a similar natural product 
and in an analogous manner. The “camphre artificiel” proper was. 
thereafter also termed “ camphre artificiel de terebenthine.” 
20 Memoirs de la Societe D’Arcueil, T. 2, p. 23. 
21 Annalen, Bd. 27, p. 40. 
23 Ann. Chim. Phys. [3], T. 27, p. 80. 
24 J. C. S., vol. 17, p. 1. 
25 Table of melting points in chronological order: 
1833. Blanchet & Sell, 43°. 
1840. Soubeiran & Capitain, 50°. 
1840. Schweizer, 50°. 
1862. Oppenheim, 48°. 
1884. Hell & Ritter 50-51°. 
1885. Yoshida 58-59°. 
1887. Weber 50° (Amalen, Bd. 238, p. 102). 
1887. Wallach 50° (Ibidem, Bd. 239, p. 12). 
26 Can therefore be precipitated from its solution in glacial acetic 
acid with the aid of water. 
27 Tilden: Berichte, Bd. 12, p. 1131. 
Wallach: Annalen, Bd. 239, p. 5. 
28 Wallach Ibidem, Bd. 230, p. 260. 
29 Wallach Ibidem, Bd. 239, p. 12. (Comp. B. & S. 4 ). 
30 Comp. Dipentene: Regeneration. 
31 Annalen, Bd. 246, p. 267. 
32 First observed by Riban: Compt. rend. T. 79, pp. 223 & 314. 
Confirmed by Wallach: Annalen, Bd. 245, p. 247. 
33 Comp, historical sketch. 
34 Hell & Ritter (1884): Berichte, Bd. 17, p. 1975. 
Wallach & Brass (1884): Annalen, Bd. 225, p. 298. 
35 First observed by List 10 (1848) verified by Deville (1849); Ann. Chim. 
Phys. [3], T. 27, p. 80, and others, Wallach: Annalen, Bd. 230, p. 248 and 
ibidem, Bd. 239, p. 18. 
36 Oppenheim 14 (1862). 
37 Wallach: Annalen, Bd. 230, p. 265. 
Comp, also Flawitzky; (1879) Berichte, Bd. 12, p. 2354 and (1887) 
ibidem, Bd. 20, p. 1956. 
Bouchardat & Lafont (1886), Compt. rend., T. 102, p. 433. 
38 Berthelot 11 (1852). 
39 & 40 Annalen, Bd. 239, p. 44. 
41 Ibidem, Bd. 245, p. 267. 
42 Ann. Chim. Phys. [3], T. 61, p. 463. 
