(121.) _Classification of diseases._[25] As the acquirement of correct ideas regarding the treatment of diseases is much facilitated by a simple arrangement of the diseases themselves, numerous attempts have been made to accomplish it, and in a variety of ways. The best of these tabular views with which I am acquainted is the one laid before the Highland Society some years ago, by Mr Stevenson, who appears to have been the first to publish any thing like a satisfactory classification. His arrangement is, however, defective in several points, more especially as it necessitates the placing in the same division diseases of organs essentially different. Thus he is compelled to admit under "Diseases of the head" _Scabs on the mouth_ side by side with _Sturdy_, and _Louping ill_: in this way mingling affections of the skin with diseases of totally different organs--the brain and spinal marrow--and causing much embarassment to the reader. To obviate this inconvenience, as well as to render the remembrance of the remedies an easy matter, I have adopted the above arrangement, in which each disease is placed opposite the textures it invades. [25] Diseases affecting {Blown or Blast. {Braxy, Sickness, or Blood. The Stomach and {Pining, Daising, Vinquish or Vanquish. Intestines. {Staggers. {Diarrhoea or Rush. {Dysentery, Cling, Breckshaw or { Breckshuach. {Scab or Itch. {Erysipelas or Wild-fire. {Red Water. {Leg Evil or Black-leg.[26] The Skin and {Inflammatory {1. Maggot. Hoofs. { appearances {2. Ked. { caused by the {3. Tick. { {4. OEstrus bovis. {Sore Teats. {Foot-rot. {Inflammation {1. OEstrus ovis. The Air Passages. { caused {2. Pentastoma. { by the {3. Strongylus filaria. {Coryza. Glandular tissues,{Rot. --viz. the Lungs, {Jaundice. Liver, & Kidney. {Dropsy. {Sturdy, {1. Hydatids or Bloba. { Gid or Dizzy, {2. Hydrocephalus, or The Brain and { caused by { Water in the Head. Spinal Marrow. {Trembling, Thwarter or Leaping-ill. {Wood Evil. The Eye. {Ophthalmia. {Soft Cancer.