636 
Transactions of the Boyal Society of South Africa. 
(11) LoTHELiER, A., 1890. — Influence de I'etat hygrometrique de Fair sur 
la production des piquants. Bull. Soc. Bot. France, xxxvii. 
(12) 1891. — Influence de reclairement sur la production des 
piquants des plantes. Comptes Kendus. Paris, cxii. 
(13) ■ 1893. — Recherches sur les plantes a piquants. Rev. G-en. de 
Bot., V. 
(14) 1812. — De I'influence de Thumiditc de Fair sur le developpe- 
ment des epines de I'lJlex europaeus. Rev. gen. de Bot., xxiv. 
(15) MacDougall, D. T., 1912.— The Water Balance of Desert Plants. 
Annals of Botany, vol. xxvi, c. i. 
(16) Oliver, F. W., 1913. — Some Remarks on Blakeney Point, Norfolk. 
Journ. of EcoL, vol. i, No. 1. 
(17) OsTENFELD, C. H., 1908. — The Land Vegetation of the Faroes. 
(18) Paulsen, Ove., 1912. — Studies of the Vegetation of the Transcaspian 
Lowlands. 
(19) Pound, R., and Clements, F. E., 1898. — The Phytogeography of 
Nebraska. 1898. — The Vegetation Regions of the Prairie 
Province. Bot. Gazette, xxv. 
(20) Raunkiaer, C. — Statistik der Lebensformen als Grundlage fiir die 
biologische Pflanzengeographie. Beih. Bot. Centralbl., 87, 1910. 
(21) Sim, T. R., 1907.— Forests and Forest Flora of the Colony of the Cape 
of C-ood Hope. 
(22) Smith, W. Gt., 1913. — Raunkiaer's " Life-forms " and Statistical 
Methods. Journ. of EcoL, vol. i, No. 1. 
(23) Warming, E., 1909.— Oecology of Plants. 
(24) Wood, J. M.— Natal Plants. Durban. 
(25) 1907.— Handbook to the Flora of Natal. 
(26) Revised List of the Flora of Natal. Trans, of S. African 
Phil. Soc. 
