620 EXPERIMENT STATION RECORD. 



increasino; the stock of fish now existing in those waters. A report is given of the 

 various plants found along the shores and extending into the deeper waters. The 

 different life zones are described, and influence of variation in depth of water is 

 shown. The rei)ort enumerates the species of phanerogams, charas, and desmids 

 observed during the investigations made in the summer of 1898. 



The flora of the Palouse region, C. V. Piper and R. K. Beattie [Pullman: 

 Washington Stati' Agr. CoL, 1901, pp. -'^OS). — Descriptions are given of all the Sper- 

 matophytes and Pteridophytes known to grow wild within a radius of 35 kilometers of 

 Pullman, Wash. The total number of species described is 663, representing 337 

 genera. 



A contribution to the knowledge of the flora of the Red River Valley in 

 Minnesota, W. A. Wheelek {Minnesota Bot. Studies, 2. ser., 1901, pt. 5, pp. 569-600, 

 pis. 8). — The results of a study of the flora of this region show the presence of 325 

 species of flowering plants. The species are enumerated and general views given of 

 the distribution of the flora in different localities. 



A preliminary list of Minnesota TJredineae, E. M. Freeman { Minnesota Bot. 

 Studies, 2. ser., 1901, pt. 5, pp. 537-560). — The occurrence and distribution is noted of 

 165 species of Uredinea?, and critical notes given on a number of species. 



Plants reported to be poisonous to stock in Australia, J. H. Maiden [Agr. 

 Gaz. Xeir Smith Wales, 12 {1901), Xo. 6, pp. 637-666). — A list is given, arranged in 

 their natural orders, of plants which have been reputed poisonous to stock, and 

 notes added briefly describing the plants, symptoms produced, and remedial treat- 

 ments suggested. The list contains many plants upon which the evidence of poison- 

 ous properties is very doubtful, and others which have been shown to be innocuous. 

 Bibliographies are given of a number of plants. 



Crossing of varieties, K. Sa.io {Prometheus, 11 {1901), pp. 209-212, 225-281, 244- 

 251, figs. 9; ahs. in .hnu\. Roij. Micros. Soc. \_London'], 1901, No. 3, pp. 300, 301).— The 

 results of crossing varieties of grapes and apples are discussed at some length. The 

 author claims that not only the seeds ])Ut the pericarp are influenced by such cross- 

 ing. It is stated that the pollen of the grape never develops tubes greater than 6 to 

 7 mm. In the apple and pear orchards wind is said to play a very small part in the 

 dissemination of pollen. Bees, flies, and other pollinating insects, as a rule, visit a 

 large number of flowers in succession on the same tree, and therefore do not bring 

 about true cross pollination. In the case of apples and pears only a small proportion 

 of the flowers are habitually fertilized (5 to 6 per cent in the former and about 13 

 per cent in the latter case). 



The vitality of pollen {Rev. Hort., 73 {1901), No. 14, pp. 323, 324).— ^n a ])rief 

 note it is stated that exijeriments have shown that the pollen of roses may retain its 

 vitality for 22 days or more; Clivias at least 3 months and some hy])rids for over a 

 year, cannas for 15 days or more, and Aucuba for 10 days. 



The double fecundation of maize, L. Guignarh {Jour. Bot. [Pa.ri.'i'], 15 {1901), 

 No. 2, pp. 37-50). — A critical review is given of the recently published papers of De 

 Vries, Correns, and Webber, relating to Xenia, or double fecundation of maize (E. 

 S. R., 12, pp. 421, 717). 



Influence of wrounds on the formation of proteid material in plants, A. 

 Hettlixger {Rev. (ien. Bot., 13 {1901), No. 150, pp. 248-250).— The author reports 

 experiments in which onion l)ull)s were divided into 4 equal parts and the proteid 

 material determined. Two of the portions were subjected to immediate analysis, 

 while the other 2 were cut in small pieces, retained in darkness for 5 days, after which 

 they were analyzed. The results showed that in the bulbs of the onion there is a 

 considerable increase of proteid material due to wounds. 



On the comparative poisonous properties of compounds of nickel and 

 cobalt when applied to higher plants, H. Coipin {Compt. Rend. Sor. Biol. Paris, 

 53 {1901), No. 17, pp: 489,490). — Comparisons of thechlorids, sulphates, and nitrates 



