On the prevalence of entozoa in the dog, with remarks on their relation to public health / by T. S. Cobbold, M.D.

  • Cobbold, T. Spencer (Thomas Spencer), 1828-1886.
Date:
[cbetween 1800 and 1899?]
Catalogue details

Licence: Public Domain Mark

Credit: On the prevalence of entozoa in the dog, with remarks on their relation to public health / by T. S. Cobbold, M.D. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    distinctly indicated the presence of this parasite in dogs dying or destroyed in this country; but it appears to be tolerably frequent in France and G-ermany. I believe it to be identical with the round-worm, which is known to be common in China and not unfre- quently to cause the sudden death of its canine host. Some years ago a manuscript was placed in my hands, giving a detailed account of the ravages inflicted by these parasites; but I fear the paper has been irretrievably lost. Dr. Hughes Bennett, of Edinburgh, has in his possession a Chinese dog's heart which had burst during life from the pressure occasioned by a large number of these parasites lodged in the ventricles. In the year 1813 a round worm, probably referable to this species, was found in the heart of a dog at Paris; and there is some probability that the microscopic haematozoa, first discovered by Grrube and Delafond in the blood of dogs, are genetically related to this species. I shall again have occasion to remark upon this point*. 3. Dochmius trigonocephalus.—This small parasite is probably not uncommon in this country, but it is either frequently over- looked or disregarded on account of its apparent unimportance. It is not likely that the migrating progeny are the source of the verminiferous condition of the blood just alluded to. Its pre- valence is certainly very variable in different countries or districts ; but the only accurate observations bearing upon this point are those given by Dr. Krabbe in his recent Danish workf. Out of 500 dogs which he had examined (after death) at the Eoyal Veterinary and Agricultural College at Copenhagen, only nine contained this parasite, whilst in 100 dogs dissected in Iceland it was entirely wanting. His experience, as regards its prevalence in other members of the canine race, coincides with that of ob- * Since this paper was announced I have received a letter from Dr. Jones Lamprey (Surg. 67th Reg.), confirming the facts above mentioned. Writing on the 15th inst., he says:—I take the liberty to inform you that I have found some remarkable entozoa in the cavities of the hearts of dogs in China, which I have sent to the Museum of the Army Medical Department at Netley, together with an account of them. I do not believe they have been, as yet, described. I (Dr. C.) may also add that since this paper was read I have reexamined Prof. Bennett's preparation, and, by his permission, have removed and retained one of the parasites. It measures exactly 10 inches in length.—T. S. C. t Helminthologiske TJndersogelser i Danmark og pad Island, med saeligt Hensyn til Blajreormlidelserne paa Island. Af Dr. med. Krabbe. Kjcebenhavn, 1865. [The above facts are taken from the Danish work ; but Dr. Xrabbe has since brought out a French edition of his treatise, and has likewise, through M, Blanchard, communicated a r6sum6 of his researches to the i^rench Academy. —T. S. C]