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CHEMISTRY AXD IXDUSTRY
I niii informed tlint U.S. Patents Nos. 1,302,7674, 1~ot.h dntcrl Octobcr 4, 1931, inoy be considcrcct such patents ns you refer to, and thnt sonic drug lioiises nrc licensed undcr tlicin to innkc thyrosinc. An interesting aspect in conncsion with the Vitamin-D question is given iii thc dignified letter of Dr. Alfrctl F. IIess piiblislicd in thc Journnl of the Aiiicricnn Mcilicnl Associntioii for tipril 12, 1930, 94, p. 1163, pointing out I-Iess' priority over Stecnbock. licss states : " I11 1923 I found tlint oils, flour, ctc. could IJC rciidcrcd antir:icliitic by csposurc to ultra-violct rnys. This fact was rcportcd bcforc nncl discusscd n t thc Aiiicricnn Ycdintric Society, Jnnc 7, 1934 ; thc titlc and nbstrnct of this p p c r tvcrc sciit to thc secretary of tlic society on April 10 of that ycnr." Both thc nbstrnct and the discussiou will IN found in thc Trnnsnct,ioiis of tlic society (volrrmc 36, Juiic 5-7, 1934). Tlic nbstrnct \vns piiblislicil in tlic " Am. Journnl of Diseases of Children " in thc Octobcr issuc. Tlic first annoiincenieiit by Stcciibock of the possibility of iiltrn-violct nctiviition was xnndc i n " Scicncc,"'Scpt. 5, 1924. Hcss is opposed to nicdiciil patents of this typc. In niiy evciit, the vididity of tlic Stcciibock pntciit, scenis to inc to bc inost dub ioiis. I nin, Sir, ctc.,
๐ SIMILAR VOLUMES
biition on tlic problcm of the nnnlysis of basic slags and thc repmsentntion of their composition in R triangular diagram," by 0. Qundmt. " Thc ningnetometric clctenninntion of the Curie points," by A. Rcgncr. "\\'lint Tensons compellecl the Prague ironworks to introduce thin-wnlld blast-furnncrs,"
## TELEPHONE Sincc thc noticc in thc JOURSAL of August 22 a furthcr chnngc lias conic into force. Tlic Socicty, while rctniniiig thc sainc niiiiibcr, is no\\-attaclicd to a new cschnngc. To call niiy dcpartrnent~ of the Socicty (Sccrctarinl, Editorinl, or Advertising), it is necessary to inquirc
As previously annoiinccd, thc dinner will tnke plncc iindcr tho chnirmtinship of Sir Arthur l~uclahrim, G.U.E., K.C.H., nt tho Connnught R.oom, lJontlon, on Thursday, Novcmbcr 6, at 7 for 7.30, nntl will IJC follo\vcd by (lancing. Tickets, 12s. (id. cnch, csclusivc of wines, m:ry be obtnincd froni M