207 
Agave protuberans differs from the true Agaves and from the 
Littaeas in having the flowers solitary on simple racemes or spikes 
and jn having herbaceous leaves without a terminal spine. It 
belongs to the Manfredas, of which its near ally A. virginica, Linn., 
is a dig ble and which may be regarded as a sub-genus of 
Agave. The leaves are covered with brownish-purple spots or 
blotches. The plant inhabits the mountains near ey pans Potosi, 
Mexico, at altitudes yr, nes to 8000 feet. The material for the 
igre Wag bg caer R. H. Beamish, 7 ps ae near Cork 
and hy J eee epee 
Tho i ae esting Hans was discovered by Mr. A. E. Pratt near 
bt le W. Szechuan, between 9000 and 13,000 feet in 1889. 
Mr. Wilson collected it in 1903 in the same locality and from the 
material sent home to Messrs. J. Veitch & Sons at Coombe Wood the 
subject of “ae illustration has been derived. The pink flowers are 
purchased for the Kew callwetions. from Mr. H. Correvon, Geneva 
Industria] Alcohol—We are indebted to Mr. J. G. M’Intosh for 
pointing out that his book on this subject was omitted from the 
= peu Hc hy at the end of Mr. Holland’s article on Alcohol in 
No. 3, 1912, pp. 113-130. We regret this inadvertent 
‘tite and take this opportunity of giving some further references 
to Works and papers which contain useful information on the subject. 
Addenda to bibliography of works relating to the production of 
Alcohol, XK. B., No. 3, 1912, p. 130. 
Barral, James, & Co, “ Beetroot Distillation,” pp- 1-126 
A. Schultze, London, 1870) ; including a “ Report on the 
ubject by Dr. Augustus Voelcker, F.R.S.,” pp. 19-49. 
arden, Dr. A. “ Alcoholic Fermentation,” pp- 1-128 
(Longmans, Green & Co., London, 1911). 
D’Hérelle, F. H., “ Utilisation des Résidus dé la Déibintion 
des Agaves pour la Production de L’Alcool,” in Journ. 
D’A te Tropicale, x., 1910, pp. 161-167. 
Hetrick, « Denatured or Industrial Alcohol,” pp. 1-516 
bee Wily & Sons, New York; Chapman & Hall, Ltd., 
ond 
Hough, Ww. c ae of Mexico,” in Proc. U.S. National 
useum, xxxill. 1908, pp. 577-592, figs. 1-19. 
M Intosh, J. G., Industrial Alcohol: A Practica 1 Manual on 
th ‘Production and Use of Alcohol for Industrial 
Purposes and for Use as a Heating Agent, as an 
IlJuminant and as a Source of Motive Power,” pp. 1-250 
with 75 Illustrations and 25 Tables (Scott, Greenwood & 
Son, London, 1907), 
eh 
