scholarly journals The Relationship of African Apes, Man, and Old World Monkeys

1970 ◽  
Vol 67 (2) ◽  
pp. 746-748 ◽  
Author(s):  
L. S. B. Leakey
PMLA ◽  
1919 ◽  
Vol 34 (3) ◽  
pp. 360-400
Author(s):  
Louise Pound

It is the purpose of the following paper to examine the relationship of the mediæval ballad to the dance, in origin and in traditional usage. Particular reference is had to the English and Scottish ballad type. In various preceding papers I have considered the theory currently accepted in America of the inseparableness of primitive dance, music, and song and have shown that primitive song is not narrative in character. I have also questioned the assumption that the ballad is the archetypal poetic form—this position should be assigned to the song, not the ballad—and the assumption of “communal” as against individual authorship for the English and Scottish popular ballads. The present paper examines the relation to the dance of the English and Scottish ballads. The view is widely accepted both in the Old World and in America that this, and similar ballad types, originated in the dance. The following paper canvasses the evidence for this view and makes inquiry as to its validity.


Author(s):  
Dorian Q. Fuller ◽  
Chris J Stevens

This paper explores the relationship of weeds and crop parasites in the domestication of crop-plants within the Old World, drawing predominately on China and the Near East. This relationship is explored using the concept of niche construction in which the act of cultivation sets about chains of feedback in which the ecological worlds of plants and humans became increasingly intertwined resulting in ever increasing spheres of interdependence. Into this domestication entanglement a number of peripheral organisms (termed parasitic domesticoids) were drawn, from the weeds which came to inhabit arable fields, to the insect pests and rodents that came to settle in the grain stores of the first farmers. The evolution and spread of these organisms is then outlined against that of the crop itself.


1982 ◽  
Vol 10 ◽  
pp. 15-25
Author(s):  
A. Dwight Culler

One of the most dramatic moments in Victorian literature is that in the Apologia pro Vita Sua in which Newman first expresses doubt about the tenablehess of his position in the Anglican Church. It was die summer of 1839 and he was proposing to spend die time quietly, reading in his favorite subject, die history of the early church. As he began to go more deeply into the matter, however, he became uneasy, and by the end of August he was seriously alarmed. “My stronghold,” he says, “was Antiquity; now here, in the middle of die fifth century, I found, as it seemed to me, Christendom of die sixteenth and die nineteenth centuries reflected. I saw my face in that mirror, and I was a monophysite.” It is true, the impact of this passage is somewhat diminished for the modern reader by his uncertainty what a Monophysite is. Even after he has done his researches and learned that a Monophysite is one who believed in the one, not the two, natures of Christ, he is little better off, for Newman was not concerned widi the doctrinal question. He was concerned with the relationship of the parties one to anodier and with the fact that, if an extreme version of a position was heretical, then a moderate version of that position was heretical too. “It was difficult,” he wrote, “to make out how the Eutychians or Monophysites were heretics, unless Protestants and Anglicans were heretics also; … There was an awful similitude, more awful, because so silent and unimpassioned, between die dead records of die past and the feverish chronicle of the present. The shadow of the fifth century was on the sixteenth. It was like a spirit rising from the troubled waters of the old world, with die shape and lineaments of the new.”


Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.


Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.


Author(s):  
Leon Dmochowski

Electron microscopy has proved to be an invaluable discipline in studies on the relationship of viruses to the origin of leukemia, sarcoma, and other types of tumors in animals and man. The successful cell-free transmission of leukemia and sarcoma in mice, rats, hamsters, and cats, interpreted as due to a virus or viruses, was proved to be due to a virus on the basis of electron microscope studies. These studies demonstrated that all the types of neoplasia in animals of the species examined are produced by a virus of certain characteristic morphological properties similar, if not identical, in the mode of development in all types of neoplasia in animals, as shown in Fig. 1.


Author(s):  
J.R. Pfeiffer ◽  
J.C. Seagrave ◽  
C. Wofsy ◽  
J.M. Oliver

In RBL-2H3 rat leukemic mast cells, crosslinking IgE-receptor complexes with anti-IgE antibody leads to degranulation. Receptor crosslinking also stimulates the redistribution of receptors on the cell surface, a process that can be observed by labeling the anti-IgE with 15 nm protein A-gold particles as described in Stump et al. (1989), followed by back-scattered electron imaging (BEI) in the scanning electron microscope. We report that anti-IgE binding stimulates the redistribution of IgE-receptor complexes at 37“C from a dispersed topography (singlets and doublets; S/D) to distributions dominated sequentially by short chains, small clusters and large aggregates of crosslinked receptors. These patterns can be observed (Figure 1), quantified (Figure 2) and analyzed statistically. Cells incubated with 1 μg/ml anti-IgE, a concentration that stimulates maximum net secretion, redistribute receptors as far as chains and small clusters during a 15 min incubation period. At 3 and 10 μg/ml anti-IgE, net secretion is reduced and the majority of receptors redistribute rapidly into clusters and large aggregates.


Author(s):  
R. W. Cole ◽  
J. C. Kim

In recent years, non-human primates have become indispensable as experimental animals in many fields of biomedical research. Pharmaceutical and related industries alone use about 2000,000 primates a year. Respiratory mite infestations in lungs of old world monkeys are of particular concern because the resulting tissue damage can directly effect experimental results, especially in those studies involving the cardiopulmonary system. There has been increasing documentation of primate parasitology in the past twenty years.


Sign in / Sign up

Export Citation Format

Share Document