10 EXPERIMENT STATION RECORD. 



Employment of the pentosan determination in testing- various vegetable 

 materials and paper stock, E. Kkober and C. Rimbacii, reported by B. Tollens 

 {Ztschr. Angeir. Chon., 15 {1902), No. 21, jip. 508-510).— The results of tests of 

 various fiber substances are reported, indicating the applicability of the ])entosan 

 determination to the testing of paper stock f(jr wood filler, etc. 



On the alleged reaction of brucin on nitrous acid, G. Lunge {Ztschr. Angeiv. 

 Chem., 15 {1902), No. 1, jtp. 1-3). — The author reports experiments which lead to the 

 conclusion that brucin acts only on nitric acid and not on nitrous acid, and that if a 

 brucin reaction is obtained in a nitrate solution free from nitric acid it is due to the 

 formation of nitric acid from nitrous acid during the manipulation of the method. 



On the behavior of nitric and nitrous acids toward brucin sulphuric acid, 

 L. \V. Winkler {Ztschr. Angeir. Chem., 15 {1002), No. S, pp. ^70-17;.^).— The author 

 reports experiments which show that, contrary to the statement of G. Lunge, 

 nitrous acid reacts more readily ujion brucin than nitric acid. 



The present status of the chemistry of albumin {Ber. Deal. Chem. GeselL, 34 

 (1901), p. 3214; abs. in Amer. Chem. Jour., 27 {1902), No. 2, pp. 147-154).— A. sum- 

 mary of some of the more recent theories and experiments on the chemistry of 

 albumin. 



The effect of nascent chlorin upon proteids, R. Eiikenfeld {Ztschr. Physiol. 

 Chem., 34 {1902), Ni. .5-6, pp. 556-.'j79). 



The coag-ulable material in the white of eg-g, L. Langstein {Beitr. Chem. 

 Physiol. H. Pathol. Ztschr. Biochem., 1 {1901), p. S3; <(bs. in Ilyg. Rundschcm, 12 

 {1902), No. 5, p. 239).— K chemical study. 



The fluorin content of teeth and bones, I, Jodlhauek {Ztschr. Biol., 41 {1901), 

 No. 4, pp. 487-492). — Methods of estimating fiuorin are critically discussed. 



Miscellaneous analyses, C. H. Jones and B. O. White ( Vermont Sta. Rpt. 1901, 

 pp. 223-220). — Analyses of 48 samples are reported, including nitrate of soda, dried 

 blood, tankage, ground bone, bone dust, acid phosphate, muriate of potash, double 

 manure salt, wood ashes, home-mixed fertilizers, muck, jadoo fiber, gluten meal, 

 dried prepared squash, graham flour, and sugar feed. 



New apparatus in water analysis, G. E. Thomas and C. A. Hall {.Tour. Amer. 

 Chem. Soc, 24 {1902), No. 6, pp. 535-539, figs. 4). — Apparatus for determining free 

 and all)uniinoid ammonia, for collecting samples from reservoirs or rivers, for the 

 determination of dissolved oxygen or carbon dioxid, and for filtering water for 

 the determination of suspended matter are described. 



New extraction apparatus, A. Landsiedl {Chem. Ztg., 26 {1902), No. 25, jjp. 274, 

 275, fi,gs. 3). — Apparatus for use with solvents of high and low boiling points and for 

 hot extraction are described. 



A drying oven with circulation of air, W. Gallenkamp {Chem. Ztg., 26 {1902), 

 No. 23, p. 249, fig. 1). 



BOTANY. > 



The flora of the metamorphic region of Alabama, F. S. Earle {Alabama Col- 

 lege Sta. Bui. 119, pp. 43-120).— h. list is given of the ferns and flowering plants of 

 the metamorphic region of Alabama, based on the collections present in the herba- 

 rium of the Alabama Polytechnic Institute. This region is of botanical interest 

 since it constitutes the southern extension of the Carolina life zone. A list is given 

 of 1,146 species and varieties, 94 of which are new to the State. 



Some changed conditions of our flora incident to the settlement of the 

 State, L. II. Pammel {Proc. ,Soc. Prom. Agr. Sci. 1901, ]>p. 107-112).— Attention is 

 called to some of the notable changes that have taken place in the flora of Iowa, 

 which are attributed to the settlement and cultivation of the land. Data are given 

 relating to the growth of a number of trees known to be 50 years old or less, includ- 

 ing the height and circumference of individual trees. Changes brought about by 



I 



