388 EXPERIMENT STATION RECORD. 



explof-ive.s (nitro-rellulo8e, iiitro-filycerin, dynamite, explosive gelatin and gelatin 

 dynamite, and smokeless powder), argon, helium, phosphorus, Ijoron, silicon, car- 

 bon, carbon monoxid and dioxid, percarbonate and hydrocyanic acid, and for the 

 elementary analysis of organic compounds. 



Textbook of chemical tech.nology, F. Fischer [Lehrbuch der cJieniischen Tech- 

 nologie. Leipzig: Otto Wigand, 1903, pp. VI-\-293, figs. 188). — An abridgment of the 

 author's larger Handhiu^i der cheminchen Technologic. 



Plant and agricultural chemistry for students and agriculturists, M. Soave 

 {Chimica vegetale e agruria ad uso degli studenii e degli agricollori. Tori)iu: Carlo 

 Clausen, 1902, pp. XV Ar 415, figs. 41). 



Introduction to the study of plant and agricultural chemistry, K. Aso and 

 E. PozziESCOT [Introduction a Fetude de la chimie vrgelcde et agricole. Paris: F. R. du 

 Rudeval, 1903, pp. 200). — A simple and original presentation of this subject based 

 upon lectures on agricultural chemistry by O. Loew at the Imperial University of 

 Tokyo. 



An apparatus for the determination of nitrog'en, R. Marquis {Bid. Soc. 

 Cliini. Paris, 3. ser., 29 {1903), No. 14, pp. 7S0-782, fig. 1). — A pump and endiometer 

 for use in tlie Dumas method are descri))ed. 



A method of calibrating burettes, D. W. Horn and Elizabeth M. Van 

 Wagener {A)n.er. Chern. Jour., 30 {1903), No. 2, pp. 96-105; (f'/.s. */* Chem. Centbl., 

 1903, IT, No. 12, p. 737). 



Picnometers, R. Leinbach {Jour. Prakt. Chem., n. ser., 66 {1902), No. 9-10, pp. 

 475-477, fig. 1; abs. in Bui. Soc. Chim. Paris, 3. ser., 30 {1903), No. 14, p. 928) .—Two 

 forms are described. 



A neAV condenser, BRACoNNiERand G. Chatelain {Bui. Soc. Cldin. Paris, 3. ser., 

 29 {1903), No. 14, jip. 779, 780, fig. 1). — This condenser is so arranged that the cool- 

 ing medium passes through as well as around the vapors to be condensed, thus pre- 

 senting a larger condensing surface and adapting the apparatus to highly volatile 

 substances. 



A pressure regulator for fractional distillation under reduced pressure, G. 

 Bertrand {Bnl. Soc. Chim. Paris, 3. ser., 29 {1903), No. 14, pp. 778, 779, fig. 1). 



A ne-w absorption apparatus and safety tube, H. Vigreux {Bui. Soc. Chim. 

 Paris, 3. ser., 29 {1903), No. 15, pp. 841-843, figs. 3). 



Ag'as furnace for laboratories, K. Friedrich {Ztschr. Angeiv. Chem., 16 {1903), 

 Av. 36, pp. 857-861, figs. 2). 



On the history of the thermometer, F. Burckhardt ( Verhandl. Naturf. Gesell. 

 Basel, 16 {1903), pp. 1-69, fig. 1). 



International catalogue of scientific literature. D — Chemistry, II ( Internat. 

 Od. Sci. Lit., 2 {1903), pt. 2, jip. XIV~r67l). — This completes the volume, the first 

 part of which was previously noted (E. S. R., 14, i>. 632). 



BOTANY. 



The synthesis of albuminoids by plants, E. Laurent and E. Marchal {Bid. 

 Acad. Roy. Belg., CI. Sci., 1903, No. 1, j)p. 55-114). — A historical review is given of 

 the sources of nitrogen for plants, the investigations of many authors being critically 

 summarized. After reviewing the literature the authors describe at considerable 

 length their experiments on the synthesis of albuminoids by various flowering j^lants. 

 The methods of determining the different forms of nitrogen are described and com- 

 parisons are drawn between the action of flowering plants and some of the lower 

 orders. 



The authors conclude that in the case of the lower orders of plants, such as Clos- 

 tridium pa.steurianum, various bacteria, Rhizobium, etc., these organisms are able to 

 assimilate free atmospheric nitrogen, either when living autonomously or in sym- 



