108 EXPERIMENT STATION RECORD. 



Peculiar vrhite flowered varieties of some species of plants, J. Klinges 

 Dent. hot. Monaisschr., 14 (1S96), Xo. 6-7, pp. 75-80). 



A remarkable variety of Populus tremala, P. Ascherson {Dent. hot. Monats- 

 sclir., 14 {1801]), No. 6-7, pp. 73-75). 



Three ne"w species of Bursera, J. Ramirez {An. Inst. Med. Xacional, 2 {1896), 

 No. 1, pp. 14-18, pU. 3). — Bursera aptera, B. irijuga, and B. morelense are described 

 and figured from Mexico. 



A new species of Casimiroa, J. Ramirez {An. Inst. Med. Xacional, ,? {1896), 

 Xo. 1, pp. 18-20, pi. 1). — Casimiroa piihescens is figured and described as new. 



Contributions to the knovvledge of Puccinia sylvatica and P. sessilis, G. 

 Wagxer (Ber. dent. hot. dcs., 14 {1896), Xo. 6, pp. 212-215). 



Contributions to the biology of the Myxomycetes, C. Lippert ( Verhandl. zool.- 

 lot. Ges. Jfien, 18DG, Xo. 6, pp. 235-243, pi. 1). 



On the transformations of Melampsora tremulae, G. Wagner {Oesterr. hot. 

 Ztschr., 46 {1890), pp. 273, 274). 



The order of development of the parasitic Bxoasceae, K. Giesexhagen 

 (Centhl. Bakf. itud Par. Allg., 2 {1896), Xo. 12, pp. 394, 395). 



On the formation of calcium oxalate in plants, J. Wittlix {Bot. Centhl., 67 

 {1896), Xos. 2, pp. 33-41; S,pp. 05-73; 4, pp. 97-102; 5, pp. 129-133, pi. 1). 



The dependence of plant respiration on the amount of their unassimilable 

 proteids, W. Palladin (Charkow, 1895; ahs. in Bot. Centhl., 67 {1896), Xo. 3, pp. 

 79-82). 



Biology of pollen, B. Lidforss {Jahrh. wiss. Bot., 19 {1896), pp. 1-38; ahs. in Jour. 

 Roy. Micros. Soc, 1896, Xo. 4, p. 437). — Attention is called to the difference in degree 

 to which nearly related pollens resist the injurious action of water. In most ane- 

 mophilous plants the pollen resists the action of moisture to a considerable extent. 



Bark within a tree trunk, F. D. Kelsey {Bot. Gaz., 22 {1896), Xo. 1, p. 54, fig. 1).— 

 Notes are given on the occurrence of a well defined bark on the inside of an elm tree 

 trunk. 



The physiology of color in plants, D. T. MacDougal {Science, n. ser., 4 {1896), 

 Xo. 89, pp. 350, 351). 



Concerning the spontaneous emptying of reserve cells, K. Puriewitsch {Ber. 

 dent. hot. Ges., 14 {1806), Xo. 0, pp. 207-212). 



Some causes of fluctuation in the turgescence in the motor organs of leaves, 

 D. D. CuxNiNGiiAM {Ann. Roy. Bot. Gard. Calcutta, {1895), I, pp. 101, pis. 5; 

 ahs. in Bot. Centhl., 67 {1890), Xo. 5, pp. 141, 142). 



Concerning the presence and physiological action of lecithins in plants, 

 J. Stoklasa {Bot. Centhl., 67 {1896), Xo. 6, pp. 101, 102). 



On the influence of earthworms upon the development of plants, M. Djemil 

 {Inaug. Diss. Halle, 1896; ahs. in Bot. Centhl, 67 {1896), Xo. 8, jjp- ^35, 236). 



Individual variation in flowers and its significance, G, R. B. von Mannagetta 

 (TFien. illus. Gart. Ztg., 21 {1896), Xo. 7, pp. 229-235). 



Fertilizers and flowers {Garden and Forest, 9 {1896), Xo. 446, pp. 361, 56;?).— Edi- 

 torial notes are given on a recent address of Prof. R. C. Kedzie before the American 

 Florists' Association on the application of fertilizers for ilower growth. 



Adaptation of plants to environment, H. de Varigny {Rev. Scient., ser. 4, 6 

 (1896), Xo. 5, pp. 140-145). 



Flowers and insects, C. Robertson {Trans. St. Louis Acad. Sci., 7 {1896), Xo. 6, 

 pp. 151-179). — Notes are given upon the adaptation for fertilization and insect 

 visitors of Hepatica acntiloha, Asimina triloha, Podophyllum peltatum, Solea concolor, 

 Enonymus atropurpureus, ^Esculus hippocastanum. Astragalus canadensis, A. mexicanus, 

 Stylosantlics elatior, Gymnocladus canadensis, Sjyiraa aruncus, Gillenia stipulacea, Vihur- 

 num opulus, V.puhcscens, Symphoricarpus rulgaris, Aster ericoidea villosus, Silphium per- 

 foliatum, Heliopsis Iwcia, Rudheckia laciniata, and Cacalia rcniformis. 



In regard to the application of "Nitragin" {Dent, landw. Prcsse, 23 (1896), Xo. 

 69, pp. 615, 616). — A popular article on the use of the Nobbe and Hiltner's " Nitra- 

 gin." 



