Neue Litleratur. 207 



Lemmermann, O., H. Fischer und B. Husek. 1909. lieber den 

 Einfluss verschiedener Basen auf die Umwandlung von Ammoniak- 

 stickstoff und Nitratstickstoff. (Landw. Versuchsstat. LXX. p. 317.) 



Loew, O. 1909. Grundsätze bei Düngung mit Kalk und Magnesia. 

 (Prakt. Blätter Pflanzenbau u. Pflanzenschutz. VII. p. 77.) 



Löhnis, F. und E. ßlobel. 1908. Die Ursachen der Wirkungs- 

 unterschiede von schwefelsaurem Ammoniak und Chilesalpeter. 

 (Fühlings landw. Ztg. 1908. p. 385.) 



Marques, A. 1909. L'Ananas. Culture, industrie et commerce. Etüde 

 faite aux lies Hawaii. (Paris 1909. 8*^. avec ill.) 



Mathewsca, E, H. 1909. Work at the Tobacco Experiment Stations. 

 (Annual Rep. Virginia agric. Expt. Stat. (Blacksburg, Va.) for 1908. 

 1909. p. 27 — 39, figs. 6 — 15.) [Report on work on fertilizers, crop 

 rotation experiments and demonstrations and on tobacco bree- 

 ding work carried on at five stations in West Virginia in 

 Cooperation with the Bureau of Plant Industry of the U. S. Dept. 

 of Agriculture. — Walter T. Swingle.] 



Meyer, A. 1909. Ueber eine Methode der quantitativen mikrosko- 

 pischen Untersuchung von Pflanzenpulvern. (Zschr. Unters. Nahr.- 

 u. Gen. -Mittel. XVII. p. 497.) 



Meyer, A. 1909. Ueber einige Bestandteile der Rinde von Termi- 

 nalia Chebula Retz. Zur Kenntnis glykosidhaltiger Extrakte. (Diss. 

 Strasburg. 1909. 66 pp.) 



Mohl, A. 1909. Chmelarstvi [Hopfenbau]. I. Teil. Geschichte des 

 Hopfenbaues. (Rakonitz [Böhmen], Verlag d. Ackerbau- u. Hopfen- 

 bauschule. 1909. 40. 222 pp. Tschechisch.) 



Moncure, W. A. P. 1909. Triple sterilization as applied to Can- 

 ning Corn. (Annual Rept. Virginia agric. Expt. Stat. (Blacksburg, 

 Va.) for 1908. 1909. p. 122—124.) [In order to sterilize corn (maize) 

 with one application of heat the temperature must be heated to 

 240° F. (115.55° C.) for at least 48 minutes; this changes the color 

 from white to a yellowish brown and practically destroyes the 

 flavor. Experiments showed that exposure to boiling heat (100° C.) 

 for 70 minutes on three successive days would completely sterilize 

 corn and preserve both the color and the flavor. — Walter 

 T. Swingle.] 



Muth, F. 1909, Untersuchungen über den Einfluss des Keimbettes 

 auf die Grösse und die Gleichmässigkeit der Keimzahlen. (Jahrber. 

 Ver. angew. Bot. VI. p. 152—222. 1 Abb.) 



Pieper, H. 1909. Vergleichende Keimversuche mit Grassämereien 

 nebst einigen Bemerkungen zu grundsätzlichen Fragen der Keim- 

 prüfungsmethode. (Diss. Jena. 1909. 8°. 69 pp.) 



Price, H. L. and A. W. Drinkard. 1909. Varietal study of To- 

 matoes. (Annual Rept. Virginia agric. Expt. Stat. (Blacksburg, Va.) for 

 1908. 1909. p. 89—95.) [Notes on 91 varieties of tomatoesand ground 

 cherries (Physalis sp.). June Pink. Earliana, Acme and Favorite 

 best early sorts at Blacksburg, Va., Beauty, Stone, Success, Per- 

 fection. Royal Red, Potato Leaf, Crimson Cushion and Globe are 

 the best mid-season main crop varieties. Golden Queen and Yellow 

 Prince are the best yellow sorts. — Walter T. Swingle.] 



Priee, H. L. and A. W. Drinkard. 1909. Varietal study of Sweet 

 Corn. (Annual Rept. Virginia agric. Expt. Stat. (Blacksburg, Va.) for 

 1908. 1909. p. 95 — 99.) [Notes on 57 varieties of sweet corn. Cory, 

 Adams Early, Early Main, Peep o'Day, and Aristocrat were best 

 early sorts at Blacksburg, Va.; Extra Early Baltimore, Howling 

 Mob, Premo, Early Ideal, Early ^i^orfolk an Metropolitan were the 



