📘 Excerpt from Clinical and Pathological Papers From the Lakeside Hospital, Cleveland, 1905The nature of lymph and chyle are of importance in diagnosis. Foster, speaking of lymph, says, Broadly speaking, we may say that all the substances present in blood plasma are present also in lymph, but are aecom panied by a larger quantity of water. The presence of fat in lymph forms the distinction between lymph and chyle. The amount of fat in chyle in the thoracic duct varies, about 57} being the common amount. In dogs it has been found to vary from 27; to 1554 This increase is due almost entirely to the presence of neutral fats. A small part of the fat is present in fat globules of con siderable size, but the large proportion of it exist in a very minute stage of subdivision, resounding under themicroscope amorphous urates, and possessing Brown ian movements. This minute subdivision of the fat constitutes what is commonly spoken of as the molecu lar basis of chyle. Lymph is almost colorless, resem bling serum which one sees coming from wounds. Chyle resembles milk in appearance, and may or may not coagulate spontaneously. Spontaneous coagulation is due to the presence of fibrin, and when observed in wounds of the duct is probably due to the small amount of blood collected with the fluid, as chyle removed from an internal cavity, as in cases of chylous ascites, does not coagulate spontaneously. The most careful and exhaust ive examinations of chyle that have been found recorded are ment...