No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
A classification of the dyeings for fastness to light and a selection of standards of fastness will be given in another report. ## STANDARD SAMPLES. THE renewal No. 3oc of the bureau's standard sample No. 3ob, chrome-vanadium steel, has been prepared and is ready for distribution. The new sample
## C. 0. BANNISTER. During rcccnt ycnrs n considerublo nmount of interest lins h e n tnkon in tlio question of the supply, ccrtificrition, and distribution of eheinicnl stnndnrd snrnples, nnd this intercst lins been shnrcd by sovornl of tho British societies dircctly or indircct.ly interested i n
## NEW LIST OF STANDARD SAMPLES. A new list of standard samples for use in chemical analyses has just been published by the bureau as Supplement to Circular No. 398. This replaces the former list known as Supplement to Circular No. 25. The samples are listed by groups, such as irons and steels,