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Show 234 ON DEATHS IN THE SOCIETY'S MENAGERIE. [Mai. 20, of the lower jaw respectively, an uncommon variation in the eruption of supernumerary teeth. (2) Portion of the skull of a Rabbit and skull of a Mouse showing curved and elongated incisors, due to the fact that these incisors had never met at their cutting-edges. (3) Skull of a Borzoi Hound in which the second left premolar had a single fang and the last right permanent molar had a double fang, both conditions being unusual. (4) Lower incisor teeth of a Cow and of a Horse, showing irregular growth due to injuries to the symphysis or union of the lower jaw. (5) Skull of a Chacma Baboon (Cynocephalusporcarius) showing displacement of the left upper incisors, due to an injury causing necrosis of the premaxilla. (6) Lower jaw of a Highland Ram showing supernumerary last molars on each side, and lower jaw of a Thar (Hemitragus jemlaicus) showing overgrown and elongated molars, due to necrosis in the upper jaw and loss of the corresponding tooth. The following papers were read :- 1. Note on Deaths occurring in the Society's Gardens during 1905. By C. G. SELIGMANN, M.B., M.R.C.P. [Received March 19, 1906.] In the annexed table will be found the causes of death, so far as they could be discovered, of 296 mammals and 218 birds which died in the Society's Gardens and which were submitted to postmortem examination during the year 1905. In these mammals and birds no cause of death was found in 28 and 36 instances respectively. A few words are necessary as to the method of classification adopted in the table. In the first five sections the conditions specified are classified pathologically according to the anatomical nature of the lesion produced. This arrangement is departed from in Section VI., where, under the heading cerebral tumour, are given two cases which logically belong elsewhere, but which are included here, since pressure on the brain produced the symptoms which caused death. In one of these cases the pressure was due to hydatid cysts, in the other to the growth of what was perhaps a Streptothrix. Under parasites are included only those cases in which it appeared that death was directly brought about by pressure and consequent exhaustion due to the presence of the parasite, which in every case given under this heading was an hydatid. Many other animals had parasites of one sort or another which appeared to have exerted little or no pathological influence. The ninth heading includes a number of birds which it appeared probable their companions had killed or severely injured. |