JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. American Society of Mammalogists is collaborating with JSTOR to digitize, preserve and extend access to Journal of Mammalogy.
[Plates 4-7]The very remarkable collection of primates, with the especially noteworthy group of anthropoids, at the Philadelphia Garden has been enriched during this autumn by the birth of a baby orang and a baby chimpanzee. The animals of the collection are unusual in the varieties exhibited and in the excellence of their condition, a state of affairs due to the wise provision of the directorial policy of the society, and to a devoted keeper. During the year 1928 there have been three orangutans, five chimpanzees, a gorilla, three gibbons, and about eighty monkeys.On September 25, the orang "Maggie" gave birth to a male baby, the first instance so far as we know of the breeding of these apes in captivity in America, while there have been only two cases in Europe.On October 1, the chimpanzee "Marianne" also became a mother, another notable event, although such arrivals have been reported from the remarkable collection of Madame Abreu at Havana, and from the New York Zoological Garden.The following pages contain an account of all the details that could be gathered concerning the mating, pregnancy, parturition and puerperium of these animals. The data are most nearly complete with respect to the chimpanzee, delivery having been observed completely by the writer.2 The orang delivered herself in a position and at a time when observation was not possible. We had, of course, no knowledge of the time at which to look for it. A few notes are added at the end that were suggested by a reading of "Histoire d'une famille de chimpanz6s" (Montana, Etude Physiologique, Paris, 1928).The following is the history of the period of time covering the pregnancy, delivery and early suckling time of the orang-utan "Maggie." 1 Pathologist to Laboratory of Comparative Pathology, Zoological Society of Philadelphia; Professor of Comparative Pathology and Director of William Pepper Laboratory, University of Pennsylvania. 2 The writer wishes to record at this place that the account of these very remarkable and valuable observations is made as complete as it is by the interested co6peration and loyal helpfulness of the keeper, James McCrossen, and our laboratory secretary, Miss Bessie A. White. The writer wishes to acknowledge his appreciation of their assistance, in which he has no doubt the Zoological Society and the scientific world will join. 37 JOURNAL OF MAMMALOGY This splendid ape was secured from Ellis S. Joseph of New York City in the spring of 1926. She weighs about 130 pounds. Her mate, a huge beast of about 175 pounds came to the gardens in September, 1927, having also been ...
