A manual of medical diagnosis / by A.W. Barclay.

  • Andrew Whyte Barclay
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: A manual of medical diagnosis / by A.W. Barclay. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

    113/642 (page 89)
    CHAPTER VI. DISEASES OF ADVENTITIOUS ORIGIN. Uharacteristics of the Class. Div. I.—Poisoning—§ 1, Common Poisons—Irritant—Narcotic—Gaseous—§ 2, Animal Virus— Syphilis—IIydroiilwhia—Glanders—§ 3, Colica Pictonum. )[)rv. II.—Entozoa-—■§ 1, Echino-coccus—§ 2, Intestinal Worms. 'In all tlie diseases wliicli have hitherto come before las we have found that the element of disease is more *^nr less beyond our reach. Each group of symptoms, complete, stands quite apart from any other ; and we are sure that it has its own separate land distinct cause in some contamination of the blood, rihis may be solely produced by external agents, as in :!:he intermittents ; or, while partly derived from with- out, the poison may be in part generated, or multi])lied, lin the body itself—as seen in typhus fever, the exan- ithemata, &c.; or it may be entirely generated in the ■body, as in rheumatism and gout. To the congei’ies of •'Symptoms thus observed, along with the supposed cause of their existence, the name of the disease is applied. We now come to a class of diseases in which, in ad- Idition to our knowledge of the symptoms, we can, in ’Certain cases, take actual cognizance of a foreign sub- ^ ' O O • stance which originates them. It includes those com- monly known as tlie effect of poisons—whether animal, vegetable, or mineral; and those parasites which infest the internal organs, the entozoa. _ The class is an inconvenient one, so far as the principles of diagnosis are concerned, because the symptoms may bo general or they may be quite local; they may bo rapid in their acc(!ss, or very slow in their progress; they may be almost entirely inde- pendent of the peculiar nature of the poison, or they may be spe- • icific, just as they consist of vital actions set up by the presence of Division I.—Poisoning.