FIELD CROPS. 327 



unit of leaf surface was nearly twice as great in the sun plants as in the shade 

 plants. Shading of tobacco plants by this coarse grade of cheese cloth did not 

 seem to result in a diminished production of total plant substance as compared 

 with other plants not shaded. As the leaves of the shade-grown plants had a 

 much greater total area than those of plants grown in the open, it was evir 

 dent that the quantity of plant material elaborated per unit of leaf area was 

 greater in the plants grown in the open. Although the cheese-cloth shade was 

 found not to influence in any marked degree the total production of dry matter 

 in the plants, the distribution of this substjince was so affected that in the 

 shade-grown plants relatively less material was deposited in the leaves and 

 more in the stems than in the corresponding organs of the plants grown in full 

 light. No evidence was secured to Indicate that shade influenced the deposition 

 of material in the roots. 



A monograph of the fungus group Penicillium, with special reference to 

 the species occurring in Norway, I, O. J. O. Sori' (^'i(lc)lf<l:. Selsk. Skr. [Chris- 

 tiania]. Math. Natwv. KL, No. 11 {1912), pp. VI-\-208, pis. 23, fig. i).— The 

 author gives an account of the morphology and physiology of the various species 

 of Penicillium and related genera known to occur in Norway, discussing their 

 systematic relationships, after which he describes in detail the species of 

 Penicillium, Dactylomyces, Acaulium, Stysanus, Gliocladium, CoroUium n. g., 

 and Aspergillopsis. 



On the lower fungi. — V, Anisomyxa plantiginis n. g. and sp., B. NfiMEC 

 (Bui. Inteniat. Acad. Sci. Francois Joseph I, 1913, pp. 15, pis. 2, figs. 5; abs. 

 in Riv. Fatal. Veg., 6 {1913), No. 7, p. 218). — A study is reported of an organ- 

 ism found on roots of Plantago lanceolata. It is thought to be new and is 

 named A. plantaginis. 



Studies on heads of wheat and spelt as a contribution to exact classifica- 

 tion, M. KoNDO {Landw. Jahrb., 1,5 {1913), No. 5, pp. 713-817, figs. 5).— This is 

 a detailed account of studies on G2 varieties of winter and 20 of summer wheat, 

 also 16 of spelt, in regard to characters available for use in exact classification 

 of cultivated grains. Some correlations appearing therefrom are also noted. 



Inventory of seeds and plants imported by the OflBce of Foreign Seed and 

 Plant Introduction during the period from July 1 to September 30, 1912 

 {U. S. Dept. Agr., Bur. Plant Indus. Inventory No. 32 {191/,), pp. U, pis. 5).— 

 This inventory gives notes on the seeds and plants introduced during the period 

 indicated, about 250 numbers being included. These represent collections se- 

 cured through collaborators, diplomatic and consular officials, or interested 

 amateurs who have forwarded from different parts of the world plants that 

 they thought might prove valuable in this country. Botanical notes and pub- 

 lication of new names are given of a number of species. 



FIELD CROPS. 



Agricultural researches and the interpretation of their results, A. Ge:^- 

 GOiRE {Ann. Gemblou.r, 22 {1912), Nos. 2. pp. 58-173; 3. pp. 130-164; Jf. pp. 

 181-208; Ann. Sta. Agron. Etat GemUoux, 2 {1913), pp. 1-86, figs. 12).— This 

 discusses field methods and the interpretation of results by the application of 

 mathematical laws bearing upon probable, systematic, and experimental errors, 

 statistical methods, and the law of minimum. 



Field experiments and the interpretations of their results, A. Gr^goibe 

 (X. Cong. Internat. Agr. Gand, 1913, Raps., Sect. 2, Question 1, pp. i3).— Essen- 

 tially the same as the article noted above. 



Some factors which influence the water requirements of plants, P, Khan- 

 KHOJE {Jour. Amer. 8oc. Agron., 6 {1914), ^o. 1, pp. 1-23, fig. l).—ln this 



