432 EXPERIMENT STATION RECORD. 



investigations on the utilization of xylan by this fungus, it was found that xylan 

 is one of the constituents of the lignifiecl membrane of plants which is capable 

 of being hyclrolyzed by the fungus and that it furnishes the necessary carbo- 

 hydrate for the development of the fungus. Judging from the morphological 

 characters presented in the cultures, the absence of woody tissues, which con- 

 tain xylan, resulted in an incomplete development of the saphrophyte. 



Water requirements of crops in India, J. W. Leather (Mem. Dept. Agr. 

 India, Chem. Ser., 1 {1910), pp. 133-184; abs. in Chem-. Zentm., 1910, I, No. 26, 

 p. 2133). — In extensive pot experiments with the more important cultivated 

 plants of India the author determined the quantity of water evaporated by 

 plants in the production of a unit weight of dry substance, and studied in this 

 connection the influence of the size of the pot, the moisture content of the soil, 

 the fertilizer, the period of growth, the kind of plant, the temperature, and the 

 humidity. 



The type localities of plants first described from New Mexico; a bibliog'- 

 raphy of New Mexican botany, P. C. Standley {U. S. Nat. Mm., Contrib. 

 Nat. Herbarium, 13, pt. 6, pp. XIV+lJi3-246, pi. 1, vuip 1). — This paper is 

 designed to assist students of the taxonomy and distribution, and to some extent 

 of the ecology, of the New Mexican flora, and contains an annotated list of those 

 plants that have their type localities in New Mexico, together with a bibliog- 

 raphy of the literature of New Mexican botany. 



The North American species of Panicum, A, S. Hitchcock and Agnes 

 Chase ([/. 8. Nat. EIiis., Contrib. Nat. Herbarium, 15, pp. XIV+396, figs. 370).— 

 This paper discusses the species of Panicum known to occur in North America 

 north of Panama, including the West Indies, the results being based largely on 

 studies of the collections in the United States National Herbarium, supplemented 

 by examinations of the material in all the large herbaria iu this country and in 

 Europe. 



FIELD CROPS. 



Field experiments with farm crops, W. Saundees, J. H. Grisdale, W. T. 

 Macoun, C. E. Saunders, F. T. Shutt, H. T. GtJssow, R. Robertson, J. Mur- 

 ray, A. Mackay, W. H. Fairfield, G. H. Hutton, and T. A. Sharpe (Camida 

 Expt. Farms Rpts. 1910, pp. 12, 13, 21-lt3, Ji6-'t9, 105-122, 1^3-150, 160-167, 170- 

 187, 193-196, 204-208, 279-283, 307-326, 3^1-367, 381-^03, Jil-i'419, 4^6-U3, U6- 

 /f58, 471-486, 494-504, pi. i ) .—Continuing work with field crops previously noted 

 (E. S. R., 22, p. 330), in 1909 the various farms conducted tests of numerous 

 varieties of corn, oats, two and six rowed barleys, spring, winter, and durum 

 wheat, emmer, spelt, buckwheat, flax, spring and winter rye, millet, peas, field 

 peas, alfalfa, red clover, alsike clover, timothy, mangels, turnips, carrots, sugar 

 beets, and potatoes. Tables state the yields obtained in these tests and the 

 more important cultural and varietal data collected in many of them. 



The results of tests of 1,385 samples of seeds for the purpose of ascertaining 

 the climatic conditions most favorable to high vitality and the influence of 

 seasonal variations are reported in tabular form, the data for wheat, barley, and 

 oats being grouped by provinces. 



The final results in a 22 years' fertilizer test conducted at the Central Experi- 

 mental Farm at Ottawa are reported for 3 periods (1) 1SSS-1S9S and 1S99. (2) 

 1900-1904, and (3) 1905-1910. Clover was grown during the second period but 

 during the third the use of fertilizers was resumed as conducted in the first. 

 The plats treated with manure gave the highest yields in all periods and for 

 all crops except that during the clover period several of the plats of corn which 

 had been treated with commercial fertilizers produced higher yields than the 

 manured plats. Rotted manure produced higher average yields than fresh 



