274 EXPERIMENT STATION RECORD. 



The microscopic examination of butter with polarized light and the nse of 

 the Zeiss refractometer, (". F.ksaxo (Staz. Sper. .{(jr. Hal., /.'(J {1SD4), Xo. '!, pp. 

 (l()l-r,l4). 



The oleorefractometer in butter analysis, C. A. Lonuv dk BurvN (Clicni. Zt(/., 

 IS {1S94), A'o. :■'', pp. 14(111,1401). 



Method for the determination of the freezing point of fatty acids, F. Woi.i - 

 BAi"i;i! {.lour. Ainer. Cheiii. Soc, 16 (1894), Xo. 10, pp. i;G-'>-n7o). 



On the Valenta acetic acid test, W. Chattaway, T. H. Pkarmain, and ('. (i. 

 Moor (Analyst, 1894, Juhi,x)p. 147-150). 



Turbidity temperature of oils and fats with glacial acetic acids, !">. W. '1\ 

 .loNEs (Analyst, 1S94, July, pp. 151-t'>5). 



Determination of allialinity in cane sugars, M. Ne\'()le (Ocsterr. unr/ar. Ztsclir. 

 /iicherhid. luid Landw., 1894, No. S; ahs. in Cdiem. Centbl., 1894, II, No. 9, p. 4o0). 



The ash conte^it of cane juice, J. H. Kramers (East Java Expt. Sta. Contr. 49, 

 pp. ic-ior,). 



Investigations on cane wax, H. C. P. Gkerlkis (llepr.from Arch. Java Snilrrind., 

 189">, p. MS). 



The estimation of sugar in cane, H. Winter ( West Java Snyar Sta. Contr. 1, 

 pp lf,-fiO). 



Causes of disagreement in the results of analyses effected by different chem- 

 ists, Dudley (liev. Univ. Mines ef Metallnr., 20 (1894), No. 3 ; ahs. in Chem. Neivs, 70 

 (1894), No. ISf.'O, p. ISO). 



Report of chemical division of Kentucky Station, 1891 (Kcntucly Sta. I!pt. 

 1891, pp. 9-40). — Analyses are given of butter (p. 337), sorghum cane, phosY)hatic 

 limestone, ash of corn (p. 288), and limouite; and a report on the analyses of sam- 

 ])les of sugar, molasses, coufectious, and honey made for the Division of CLeiuistiy 

 of this Department and published in part vi of Bulletin No. 13 of that division. 



Report of chemist of Kentiicky Station, 1892 (Kenttiely Sta. Rpt. 189.1, pp- 

 9-20). — Analyses are given of butter (p. 337), spurrv. Hungarian grass cut for hay, 

 cheat, serradella, sweet clover (Alelilotns alba), clover hay, wheat bran, corn-and-coli 

 meal, ground shelled oats, linseed meal, "ground mixed feed," cotton-seed liuUs, 

 sorghum-cane juices, marls, soils, tobacco stems, hickory-wood ashes, mud from 

 river bottom, refuse from salt works, burnt marl, sawmill ashes, bituminous shale, 

 ginseng roots, "par oidium," or "black sulphur," and as])halt rock, and numtion is 

 made of examniations of the viscera of cattle for poisoning. 



BOTANY. 



Notes on maize, E. L. Stuetevant {Torrcji BuL, 21 {IS9J), No. 8, 



pp. 31!)-3io). 



Synopsis. — The author gives a list of botanical species and varieties; a report of 

 experiments on germination, hardiness, and prolificacy; a sketih of the syuon- 

 oniy and history of the different species; early cultivation and distribution of 

 maize, and relation ot niiiize to its environment. 



Contrary to the prevailiug system of groupino- all forms under the 

 name Zm v</f(?/.s', the author divides them as follows: Zca tuiiicdia, ov 

 l)od corns, from whioli are derived Zea cverta, ])op corns; Z. indnrdla, 

 Hint corns; Z. indeniaia^ dent corns; Z. aiin/laccd, soft corns; Z. saccha- 

 r<(t(i, sweet corns; and Z. a»ii/hmsacch((rafa, starchy, sweet corns. 

 Each of these species has 3 varieties or subspecies: (1) kernel broader 

 than long-, (U) kernel broad as long, and (."J) kernel longer than broad. 

 It seems probable that greater climatic relations exist between these 



