612 EXPERIMENT STATION RECORD. 



The organography of plants, K. Goebel (Organographie der Pflanzen. Pt. .', Spe- 

 cial Organography. Jena: G. Fischer, 1S9S, ill.). 



Medicinal plants -which have been collected and used in North Carolina, 

 C. W. Hyams (North Carolina Sta. Bui. 150, pp. 3.29-409). — The author has given a 

 descriptive catalogue of the plants which have reputed medicinal virtues and which 

 are either native to the State or have become naturalized there. While many of the . 

 plants named are the source of regular officinal preparations, there is no doubt that 

 many which are largely collected and used have little or no value. The bulletin is 

 not intended to indorse the medicinal value of any of the species enumerated. 



A new myxomycete in New South Wales, 1). McAlpine (Proc. Linn. Soc. New 

 South Wales, 12 (1S9S), No. 1, pp. 82-84). — Notes the occurrence of Physarum cincrcum 

 ou Stenotaphorum americanum, Cynodon dactylon, and Kyllingia monocephala. 



The anatomical structure of the stem of beets, G. Fuox (Compt. Rend. Acad. 

 Sci. Paris, 127 (1S9S), No. 10, pp. 397-400, fig. 1). — Comparative anatomical studies 

 are reported upon Beta vulgaris and B. maritima, biennial plants, with B. cycla, an 

 annual. 



Concerning the red coloration of the stomata of Picea, P. Sorauer (Nolisol. 

 Bot. Garten u. Mus., Berlin, 2 (1898), No. 16, pp. 239-240). — The author does not agree 

 with Hartig that the red coloration of the guard cells is due to the presence of sul- 

 phurous acid in the air. He states that the red coloration of guard cells is not con- 

 fined to the spruces, but has been observed in other conifers where factory smoke 

 and fumes could not have exerted any effect. It is stated that sulphurous acid does 

 influence chlorophyll production and may discolor the chlorophyll grain, but the 

 author has no evidence to show that it becomes red ou such account. 



The nucleus of the yeast plant, H. Wager (Ann. Bot., 12 (1898), No. 48, pp. 499- 

 544, pis. 2). — The author states that all yeast cells contain a nuclear apparatus, which 

 is figured and described. 



Concerning the nucleolus of Spirogyr?, C. Van Wisselingii (Bot. Ztg., 56 

 (1S98), No. 11-12, pp. 195-226, pi. 1). — A contribution to the study of karyokinesis. 



Structure and function of the beards on cereal grasses, B. Schmid (Bot. 

 Cenibl., 76 (1898), No. 1, pp. 1-9; 2, pp. 36-41; 3, pp. 70-76; 4, pp. 118-128; 5-6, pp. 

 156-166; 7, pp. 212-221; S, pp. 264-270; 9, pp. 301-307; 10, pp. 328-334, pis. 2). 



On the germination of some aecidial spores, 1*. Nypels (Ann. Soc. Beige Micros., 

 22 (1898), No. 2, pp. 103-111, fig. 1). — Notes are given on the germination of the 

 spores of JEcidiwm leucospermum and some other forms. 



Vegetable physiology, G. Berthold (Untersuchungen ~ur Physiologie der pflanz- 

 lichcu Organisation. Leipzig: Wilhelm Fngelmann, 189S, pt. 1, pp. IV -f- 243, pi. 1). 



Reaction of protoplasm to thermal irritation, K. L. SCHAEFER (Flora, 75 ( 1898), 

 pp. 135-140). — It is stated that between 10 and 31° C. sensitiveness increases nearly 

 in a geometrical ratio proportional to the arithmetical increase in temperature. 



Light and vegetation, D. T. Macdougal (Pop. S<i.Mo.,54 (1898), No. 22, pp. 193- 

 201).— A popular paper in which is shown the influence of light on growth of plants. 



A remarkable increase in the size of leaves apparently due to reduction of 

 light, W. J. Beat (Proc. Amer. Assoc. Adv. Sci., 47 (189S), p. 414).— Shortly before 

 flowering several plants of Kalmia anguslifolia were removed from Grayling, Mich- 

 igan, to the grounds of the Michigan Agricultural College, where they were planted 

 in wet muck, and over the tops about 8 ft. above was a screen of lath and leaves of 

 trees, which cut off at least one-half of the light during the middle of the day and 

 a larger percentage morning and evening. The leaves of these plants were much 

 larger than normal, the surface being fully four times that of leaves from the original 

 habitat collected the year previous. 



On seasonal variations of elevation in a branch of a horse chestnut, M. Christy 

 (Jour. Finn. Soc. Bot. [London], S3 (1898), No. 234, pp. 501-506, pi. 1).— Notes a seasonal 

 variation in the elevation of a limb of a horse-chestnut tree. Observations covering 

 nearly 4 years are reported iu which there seemed to be an almost regular depression 

 and elevation of the limb. 



