[灌水]without foundation

0

consisting in great part of brown resinous substances insoluble in water. The investigations touching this su  Moncler , Moncler jacket, Moncler K2 vest black, Moncler K2 vest Pink  bject which remain to be noticed are few in number. Notwithstanding its importance from a physiological point of view, the difficulties connected with it, and the uncertainty of the conclusions to which most previous researches had led, probably deterred many from entering on its investigation. Tichborne's * account of the normal urinary pigment differs from  Moncler jackets, Moncler Multiple K2 Vest Beige  those of some of his predecessors. According to him the colouring-matter of normal urine is a brown, amorphous substance, which is very hygroscopic, easily soluble in water, less soluble in alcohol, and insoluble in ether. The colour of its watery solution cannot be distinguished from that of ordinary urine, and by making it more or less dilute, the several tints of normal urine may be imitated. Tichborne has given the results   Moncler jackets for men, Moncler Alpin, Moncler Angers, Moncler Bady  of its analysis, which is probably the first ever made of any urinary extractive matter, that is, of the substance as it exists in urine to which the usual colour of the secretion is due. His results, however, differ very widely from those arrived at by myself, and lead to a composition more nearly approaching that of the brown colouring-matters insoluble in water so often obtained in previous experiments. The hypothesis which he has ventured to set up, viz. that this substance is derived in some way from hippuric acid, is, I think, to  Moncler Branson Jacket ，Moncler Branson Navy , Moncler Bea  tally without foundation. Indeed there are more reasons in favour of the converse hypothesis, viz. that the urinary extractive matters are the source, or at least one source, of hippuric acid. The existence in urine of more than one kind of extractive matter seems to have escaped the notice of this observer. By far the most complete investigation of the colouring-matters of normal urine is that of Dr. Thudichum f. The results o  Moncler down jackets, Moncler Multiple K2 Vest Black   f this investigation having quite recently been made known, I need not enter at present into any of the details. In giving an account of my own experiments, I shall have occasion to show that my results differ in many respects from those of Dr. Thudichum. I cannot, however, even now refrain from expressing my surprise that, notwithstanding the numerous observations and experiments of chemists on the blue and red colouring-matters from urine, he should have arrived at the conclusion that " from healthy   Moncler jackets women, Moncler Boutique  human urine neither indican nor uroxanthine, nor any other substance yielding, by decomposition with * Chemical News, vol. v. p. 171. t British Medical Journal, November 5, 1864. VOL. XVI. H acids, indigo-red and indigo-blue, can be extracted," and that "it yields neither indigo-red nor indigo-blue by boiling with acids." This result, however, may easily be accounted for by any one

0