C8HjCH2CH2CHBrCH2Br 33 34 29 C8H6(CH2)8CsH6 3 3 3(5) Ch. Provost, Bull. toe. chim., (4) 49, 1376 (1931).facilitate the removal of allylbenzene. The results of the various trials are summarized in Table II.Action of Chloral on j-Phenylbutylmagnesium Bromide.-In these experiments the usual procedure described above was followed except that no attempt was made to separate the 4-phenylbutene-l formed in the reaction. In all cases this was identified as the dibromide. The results are given in Table III. Summary 1.0 -Phenylethylmagnesium bromide, yphenylpropylmagnesium bromide and 5-phenylbutylmagnesium bromide reacted with chloral to give trichloroethanol, unsaturated hydrocarbons and coupling products.2. No secondary alcohols containing the trichloromethyl group were obtained under the conditions of these experiments.

3) reported the presence of a water-soluble polysaccharide in western l a r c h (Larix occidentalis, Nuttall).This interesting substance, on hydrolysis, gave extraord i n a r i l y high yields of galactose, and Schorger and Smith ventured the opinion that this was the only sugar formed.The water-soluble s u bstance, which was termed "Egalactan" by its discoverers, when distilled with 12 per cent I The water-soluble +galactan of western larch, described by Schorger and Smith, yields 11.95 per cent arabinose and 84.6 per cent galactose on complete hydrolysis and appears to be an arabogalactan. Over 70 per cent of the galactose present, as indicated by analysis, could actually be separated in crystalline form. The arabinose was identified through its benzylphenylhydrazone and the diphenylhydrazone.Van der Haar's modification of Tollen's mucic acid method gives a fair approximation of the galactose content in e-galactan hydrolysis mixtures. A modification of the Neuberg-Wohlgemuth method for arabinose furnishes a convenient proximate means of estimating this sugar. The excellent thiobarbituric acid method for furfural devised by Dox and Plaisance is admirably suited to the accurate determination of of galactose.h y d r o c h l o r i c acid, yielded about 6.2 per cent furfural, while pure galactose under similar conditions gave rise to only 0.55 per cent of an aldehyde calculated as furfural. In explanation of this phenomenon, Schorger and Smith make the following comment: "It is believed that the formation of furfural is due to the peculiar structure of the galactan molecule, and not to the presence of a pentosan residue."I n a preliminary investigation on €-galactan, the present writers were able, not only to check Schorger and Smith's furfural yields in the case of the original polysaccharide, but to obtain practically the same furfural yields after the complete hydrolysis of the galactan. Theoretically such a hydrolysate, if it contained galactose as the sole sugar, should yield only negligible amounts of aldehyde when distilled with 12 per cent hydrochloric acid, This intriguing discrepancy caused the writers to repeat and to extend Schorger and Smith's work on e-galactan. The results virtually substantiated those of the previous investigators, with one important exception. Arabinose was definitely shown to be one of the products of the €-galactan hydrolysis and the percentage of arabinose (determined gravimetrically as the diphenylhydrazone) accounted quantitatively for the furfural yield obtained from the hydrolyzed galactan by two different methods. A series of careful determinations of galactose and arabinose indicated the presence of 84 to 85 per cent anhydrogalactose arabinose in the presence 1 Received January 20, 1930. Presented under the subtitle by L. E. Wise before the Division of Cellulose Chemistry at the 78th Meeting of the American Chemical Society, Minneapolis, Minn., September 9 to 13, 1929. The first article in this series, by Harlow and Wise, was published in IND. ENG. CHSM., 40, 720 (1928). an...

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references are to be found on the subject of electrodialysis, and new applications and uses are numerous.Most of the data reported in the present paper have resulted from research necessary to obtain a substance of a certain purity for use in some other investigation.The apparatus used in the electrodialysis experiments was essentially that described by Holmes and Elder (4). In all experiments a piece of platinum foil was placed between the carbon anode and the filter paper. Parchment and Cellophane membranes were used throughout the investigation. Electrodialysis of CaseinSamples of both acid and rennin casein were obtained from the research laboratory of the Borden Company. The ash content of acid casein before electrodialysis was 3.69 per cent and after 56 hours of electrodialysis was 0.067 per cent, a 98.4 per cent removal of ash. The acid casein (8.41 grams) was suspended in dilute acetic acid and diluted to 850 cc. Ammeter readings varied from 0.22 ampere at the start to 0.027 ampere at the end. The maximum and minimum temperatures within the cell were 45°and 25°C ., respectively. A sliding resistance was used to keep the cell from heating too much. During electrodialysis a horny material deposited on the cathode membrane, and, when dried, had an ash content of 0.069 per cent.