Page:Reflections upon ancient and modern learning (IA b3032449x).pdf/271

 covered with one common Membrane, with one or more common Canals, into which the separated Juice is poured by little Pipes, coming from every smaller Glandule; as in the Liver, the Kidneys, the Pancreas, and Salival Glands of the Mouth. The Conglobate Glands are single, often without an Excretory Duct of their own, only perforated by the Lympheducts. Of all which Things, as essential to the Nature of Glands, the Ancient Anatomists had no sort of Notion.

The Mucilage of the Joints and Muscles was found out by Dr. Havers (x). He discovered in every Joint, particular Glands, out of which issues a Mucilaginous Substance, whose Nature he examined by numerous Experiments; which, with the Marrow supplied by the Bones, always serves to oil the Wheels, that so our Joints and Muscles might answer those Ends of Motion, for which Nature designed them. This was a very useful Discovery, since it makes Abundance of Things that were very obscure in that Part of Anatomy, very plain, and facile to be understood: And, among other Things, it shews the Use of that excellent Oil which is contained in our Bones, and there separated by proper Strainers,