Unfired Clay Objects from Waterfall Ruin, Northeastern Arizona

1957 ◽  
Vol 23 (1) ◽  
pp. 81-83 ◽  
Author(s):  
Douglas S. Byers ◽  
Noel Morss

Waterfall Ruin (N.A. 2676), a cave ruin in the Chinlee Valley about 12 miles south of Poncho House, has been briefly described by Guernsey (1931: 32–6) and was the subject of further excavation by Peabody Museum parties led by Oliver La Farge in 1924 and by the senior author in 1933. A number of modeled clay objects obtained in 1933 are of interest as tending to bridge the gap between the Basketmaker III clay complex and certain later manifestations. The earliest structures at the site are Ba.sketmaker III. The main occupation, characterized by continuous building and rebuilding, was in Pueblo I to early Pueblo II, the pottery being predominantly Deadman's Black-on-red and Kana-a Gray and Black-on-white, with some Black Mesa Black-on-white and all-over corrugated ware.

PEDIATRICS ◽  
1949 ◽  
Vol 4 (6) ◽  
pp. 855-855

The senior author is Director of the Institute for Psychosomatic and Psychiatric Research and Training and Chairman of the Department of Neuropsychiatry of the Michael Reese Hospital, Chicago, Ill. The new junior author is Professor of Neurological Surgery, University of Illinois, Chicago, III. Changes in this extensively revised new edition include the omission of the first few chapters of previous editions. Much of that material has been incorporated in the remaining text. No special treatment of the subject of neurology in young people and children is presented in the text. The subject as presented is reliable and complete with this exception. The book should be a standard text.


1949 ◽  
Vol 15 (2) ◽  
pp. 157-160
Author(s):  
Chris Vickers ◽  
Ralph D. Bird

The spread of the Headwaters Lakes Aspect in a northwesterly direction through Manitoba, has been the subject of previous comment by the senior author. The manifestations of the aspect in this area, have a marked resemblance to the Black Duck Focus, and have been defined as the Manitoba Focus.The factual data upon which this conclusion is based are derived from three controlled excavations in Manitoba. Hecker and Hlady excavated the Lockport site, north of the city of Winnipeg, in August, 1947. Hecker reports the presence of sherds that show a “close relationship” to the Black Duck Focus. During 1947 and 1948 the junior author conducted excavations on the Scott site near Brandon, Manitoba. This site is located on the S.W. Sec. 35, T. 10, R. 20, W. 1, and has yielded a good collection of Manitoba Focus sherds, with an associated artifact complex that closely corresponds to that outlined by Wilford for the Headwaters Lakes Aspect.


Geophysics ◽  
1995 ◽  
Vol 60 (6) ◽  
pp. 1936-1941
Author(s):  
A. Apparao ◽  
G. S. Srinivas

Bhattacharya and Sen (1981) are the first to study the depths of investigation of various collinear electrode arrays for a homogeneous anisotropic half‐space. In their study they substituted the aniosotropic medium by an appropriate homogeneous medium of resistivity [Formula: see text]. However, they committed a serious error at assuming their basic equation‐13 as the “expression of potential at a point (X, y, Z) due to a point source of current strength I placed over a semi‐infinite homogeneous isotropic medium of resistivity [Formula: see text]”. The error is that X and Z in equation (13) are not independent coordinates. As a consequence, all their expressions for NDICs for different electrode arrays become incorrect. Consequently, their results and conclusions also become invalid. The mistake was detected only recently by the senior author of this paper (A. Apparao) in the course of his writing a book on ‘Developments in geoelectrical methods’. Since the subject of anisotropy is very interesting, there arises an urgent need to derive the correct expressions of the depth investigation characteristics for different electrode arrays. We present in this paper the expressions for normalized depth investigation characteristics (NDIC) for homogeneous and anisotropic half spaces for different electrode systems, including dipolar systems.


1969 ◽  
Vol 17 (4) ◽  
pp. 271-286
Author(s):  
Melville T. Cook ◽  
Pablo Morales Otero

The importance of the gummosis disease of sugar cane and the advance in our knowledge of the subject since the publication of the previous papers by the senior author have made a further study of the subject very desirable. The most important of these advancements is in our knowledge of the geographical distribution and of new species or strains.


Dr. J. K. Roberts and the senior author of this paper began experiments upon the mechanical equivalent of heat in 1918. Mr. Roberts left Australia in 1920, and in that year he published an account of the principles of the design of the induction dynamometer which we have used. The experiments have been continued by the authors of this paper, but so many difficulties have had to be overcome to attain high accuracy as to make the investigation a prolonged one. What may be called the electrical equivalent of heat has been the subject of the wellknown investigations of Griffiths, Schuster and Gannon, Callendar and Barnes, W. R. and W. E. Bousfield, and Jaeger and Steinwehr. One of us has given a critical discussion of these experiments, and has corrected the previously published results to the thermodynamic scale of temperature, and the electrical units used to their now accepted absolute values. The direct determination of J has received much less attention ; for, in addition to Joule's original experiments, there are only those of Rowland, and Reynolds and Moorby.


1941 ◽  
Vol 7 (2Part1) ◽  
pp. 164-165
Author(s):  
Harold S. Colton

A very important southwestern pottery type, well dated by tree ring studies, is called Deadmans Black-on-white by Colton, and Black Mesa Pueblo II Black-on-white by Morss. When the Handbook of Northern Arizona Pottery Wares (Colton and Hargrave, 1937) was being written, and there were two descriptions of the type, the question arose which name to choose. The original description of Deadmans Black-on-white appeared in Bulletin 104 of the Bureau of American Ethnology, which carried a printed authorization date of Feb. 17, 1931, and which appeared in 1932. Morss published his description of the same type in 1931, calling it Black Mesa Pueblo II Black-on-white (Papers of the Peabody Museum of American Archaeology and Ethnology).


PMLA ◽  
1935 ◽  
Vol 50 (4) ◽  
pp. 1320-1327
Author(s):  
Colbert Searles

THE germ of that which follows came into being many years ago in the days of my youth as a university instructor and assistant professor. It was generated by the then quite outspoken attitude of colleagues in the “exact sciences”; the sciences of which the subject-matter can be exactly weighed and measured and the force of its movements mathematically demonstrated. They assured us that the study of languages and literature had little or nothing scientific about it because: “It had no domain of concrete fact in which to work.” Ergo, the scientific spirit was theirs by a stroke of “efficacious grace” as it were. Ours was at best only a kind of “sufficient grace,” pleasant and even necessary to have, but which could, by no means ensure a reception among the elected.


1966 ◽  
Vol 25 ◽  
pp. 363-371
Author(s):  
P. Sconzo

In this paper an orbit computation program for artificial satellites is presented. This program is operational and it has already been used to compute the orbits of several satellites.After an introductory discussion on the subject of artificial satellite orbit computations, the features of this program are thoroughly explained. In order to achieve the representation of the orbital elements over short intervals of time a drag-free perturbation theory coupled with a differential correction procedure is used, while the long range behavior is obtained empirically. The empirical treatment of the non-gravitational effects upon the satellite motion seems to be very satisfactory. Numerical analysis procedures supporting this treatment and experience gained in using our program are also objects of discussion.


1966 ◽  
Vol 27 ◽  
pp. 159-161

Rule: I'd like at this point to bring up the subject of cables and wireways around the telescope. We've touched upon this twice during previous sessions: the cable wrap up problem, the communications problem, and data multiplexing problem. I think we'll ask Bill Baustian if he will give us a brief run down on what the electrical run problems are, besides doubling the system every year.


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.


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