Pediatrics. . rritans). While this is one of the smaller tapeworms, it cannot be lookedupon as harmless, for it sometimes burrows into the intestinal Synonyms: Taenia canina Linneaus, 1758; T. moniliformis Pallas,1781; T. cucumerina Bloch., 1782; T. elliptica Batsch, 1786; T. {Dipyli-dium) (Linnaeus) Leuckart, 1863. 132 CH. WARDELL STILES mucosa making a tunnel-like channel, through which the segmentsare pulled much like a train of cars passing through a tunnel. Clinical Diagnosis.—In diagnosis, search should be made inthe feces for the peculiar elongated elliptical tapeworm
Pediatrics. . rritans). While this is one of the smaller tapeworms, it cannot be lookedupon as harmless, for it sometimes burrows into the intestinal Synonyms: Taenia canina Linneaus, 1758; T. moniliformis Pallas,1781; T. cucumerina Bloch., 1782; T. elliptica Batsch, 1786; T. {Dipyli-dium) (Linnaeus) Leuckart, 1863. 132 CH. WARDELL STILES mucosa making a tunnel-like channel, through which the segmentsare pulled much like a train of cars passing through a tunnel. Clinical Diagnosis.—In diagnosis, search should be made inthe feces for the peculiar elongated elliptical tapeworm examination of the feces for eggs is less certainthan in case of infection with Taenia saginata, T. solium, or Dibo-thriocephalus latus, since Dipylidium is much smaller and less pro-lific than any of these three forms. The eggs of Dipylidium caninum are entirely different fromthose of any Taenia. In the genus Taenia we find a thick striatedinner shell (embryophore), while in Dipylidium the inner shell is. Fig. 5.—Egg packet of same. Greatly enlarged. 6.—Egg of same. Note the six hooks in the embryo. Greatly en-larged. Original. Fig. 7.—Cryptocystis trichodectis, the larval (infection) stage ofDipylidium caninum as found in the flea. After Lenckart, 1886, page 847,Fig. 348. thin. The six-hooked embryo, characteristic of all tapeworms, isobserved in the egg. Physicians who wish to become familiar with Dipylidiumcaninum can easily obtain specimens by examining several catsor dogs, as this tapeworm is very common in these animals. Fora zoological discussion and bibliography of the genus Dipylidium,the reader is referred to Diamare, 1893, II genre Dipylidium Lt.(Atti R. Accad. fis. e mat. di Napoli, 2. s., v. 6 (7), presentata13 maggio, 1893. Reprinted as separate, 31 pp., pis. 1-3, with50 figs. 40. Napoli, 1893.) OBSERVATIONS ON THE MICROORGANISMS INTHE WATER OF PUBLIC SWIMMING BATHS,AND A By E. E. Glynn, , , OF LIVERPOOL. ASSISTANT LE
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