PYRIDINE ALKYL PERIODIDES.i. Pyridine Methyl Pentiodide.-This was obtained in the manner given in detail below, very satisfactorily in preparation I, and with slight impurity in two other preparations, II and III, by different ways, through separation from other periodides. 1 The substance isolated was a condensation-product of this with a second molecule of nitrotoluene ; but this is undoubtedly the primary reduction-product.2 Read at the Springrield meeting of the American Association for the Advancement of Science, September 2, 1895.

No abstract

No abstract

Emmett and Grindley's method does not give high enough results for organic phosphorus in cold water extracts of flesh, as the heat of coagulation has changed nearly all of the organic phosphorus to the inorganic form.Barium chloride in slightly ammoniacal solution precipitates the inorganic phosphorus from water extracts of flesh and gives a satisfactorily accurate separation of the inorganic from the organic form.There seems to be a progressive splitting up of the organic phosphorus compounds in beef flesh during the process of cooking so that in well done meats practically all the phosphorus is present in the inorganic form.A study of the tables shows considerable variation in the relative amounts of soluble and soluble organic phosphorus in different cuts and in different animals.Extremes will be noted in rib of Jerry (a fat show steer) in which 91.44 per cent, of the soluble phosphorus is organic and in composite of 592 (an extremely emaciated steer) where only 26.02 per cent, or the soluble phosphorus is organic. This subject is being investigated further.

2 This is the beginning of Mr. Diehl's work upon "Foundations for the Estimationof Alkaloids, Conducted for the Committee of Revision of the U. S. Pharmacopeia," by Prof. A. B. Prescott. T h e next following work has been upon '' Mixed Perhalides of Pyridine and Piperidine," now nearly ready for publication.