No. 1, February, 1921] MORPHOLOGY, ETC., VASC. PLANTS 47 



HORTICULTURE-PRODUCTS 



314. Fabre, J. -Henri. Precedes modernes de vinification en Algeria et dans les pays 

 chands. [Modern methods of wine mailing for Algeria and the warm regions.] 2 ed. 184 V- 

 J. -Henri Fabre : Maison-Carre, 1920. 



315. Jones, J. Cacao production in Dominica. Agric. News [Barbados] 19:91. 1920. — 

 Attention is drawn to the fact that owing to the losses of trees during the hurricanes of 1915 

 and 1916 (in the latter over 10,000 trees were lost on the estates and even more from the 

 peasants plots) and to the large amount of cacao smuggled to the neighboring foreign islands 

 where the product was in great demand, the figures of export given by the Customs Depart- 

 ment are hardly an index of the production. These figures are: 1917, 3169 cwt. ; 1918, 4239 

 cwt.; and 1919, 3214 cwt. for the months of January to November. The writer remarks that 

 while the trees which survived the hurricane have returned to pre-hurricane production, 

 little or no effort has been made to replace the trees destroyed. — J. S. Dash. 



MORPHOLOGY, ANATOMY AND HISTOLOGY OF VASCULAR 



PLANTS 



E. W. SiNNOTT, Editor 



316. Andrews, E. F. Habits and habitats of the North American Resurrection Fern. 

 Torreya 20: 91-96. 1920. 



317. Anonymous. Applied plant morphology. [Rev. of : Barber, C. A. Studies in Indian 

 sugar canes. Mem. Dept. Agric. India Bot. Ser. 10: 39-153. June, 1919]. Nature 104: 578. 

 1920.— See Bot. Absts. 7, Entry 7. 



318. Burns, George P. Eccentric growth and the formation of redwood in the main stem 

 of conifers. Vermont Agric. E.\p. Sta. Bull. 219: 1-10. PL 4, 10 fig. 1920.— This bulletin 

 is a discussion of the relative importance of compression and gravity as factors in the pro- 

 duction of redwood in conifers, based on experimental work in the greenhouse and in the open 

 on spruce and white pine. The author concludes that compression does not stimulate the 

 cambium to rapid division to produce redwood. The pressure of mechanical forces did cause, 

 in the white pine, a differentiation into summer wood and spring wood, but no redwood for- 

 mation. The conclusion is, therefore, that the production of redwood is a morphogenic 

 response of the tree to the stimulus of gravity. — B. F. Lutman. 



319. Chemin, E. Observations anatomiques et biologiques sur le genre "Lathraea." 

 [Anatomical and biological observations on the genus "Lathraea."] Ann. Sci. Nat. Bot. 

 X, 2: 125-272. 1 pi., 88 fig. 1920. — A contribution to knowledge of parasitic plants. After 

 reciting the generic and specific characters in Lathraea, recognizing the five species listed in 

 Index Kewensis, the author presents observations on the two French species L. clandestina 

 and L. squamaria, dealing with root, with development, penetration and feeding of haus- 

 torium, with leaves present as scales bearing glands (which, according to the author's hypo- 

 thesis, function as excretory organs), and with germination. The author supposes that origi- 

 nally an accidental and partial parasitism caused adaptation to dark places, and that this 

 led to complete disappearance of chlorophyll and to obligate parasitism. — /. P. Kelly. 



320. Church, Margaret B. Root contraction. Plant World 22: 337-340. 1 fig. 1919. 



321. Gluck, H. Blatt-und blutenmorphologische Studien. [Studies in the morphology 

 of leaf and flower.] 284 p., 7 pi., 284 fig- Gustav Fischer: Jena, 1919. — A broad morpho- 

 logical survey' of stipular structures in general, of intervaginal papillae and of the leaf sheath, 

 with a resulting interpretation of the morphological nature of bracts and floral envelopes. 

 The venation of these latter organs plays an important part in any study of their nature, 

 and considerable emphasis is therefore placed upon it and upon the ontogenetic development 

 of the structures investigated. — E. W. Sinnott. 



