Commercial lecithin preparations are at best very impure substances; all are more or less altered from the original composition. Even with great care, the methods of extraction and drying always produce considerable decomposition; and in some cases the phosphorus and nitrogen contents bear but little relation to the theoretical values. (Long, J. H.: _Jour. Am. Chem. Soc._, xxx, 881. McLean, Hugh: _Chem. Abstracts_, May 20, 1915). There is not the slightest reliable evidence that commercial lecithin has any advantage over the lecithin contained in natural foods; the weight of probability is on the other side. The doses recommended, moreover, are absurdly small; and the amount thus administered is without practical value. Why administer a few milligrams of a more or less decomposed lecithin when it is possible to give a far larger weight of a purer substance in the form of yolk of egg? In view of these considerations the Council voted that the following proprietary products be omitted from the next edition of N. N. R.: Glycerole of Lecithin Lecibrin Lecithin Solution Lecithol Neuro-Lecithin-Abbott and that the general article on “Lecithin Preparations” be transferred to the annual Council Reports as a matter of record. The report was submitted to the manufacturers. Their replies were evidently based on commercial consideration, and called for no modification in the report. The referee recommended that the preceding report be published together with the following extracts from the replies of the manufacturers: From Armour and Company: “We are selling a good deal of Lecithol and it seems to be giving satisfactory results in some quarters.... We shall continue to advertise Lecithol along the lines we have employed heretofore.” From the Abbott Laboratories: “We can assure you of our confidence in the therapeutic value of Neuro-Lecithin. This has been attested by the reports of favorable results sent us by many physicians, as well as by the periodical literature of the last few years which contains a considerable number of very encouraging references to lecithin therapy.” From Fairchild Bros. & Foster: