American Museum of Natural History

The Nature of Diamonds. American Museum of Natural History, http //www.amnh.org/exhibitions/diamonds/... 

We are grateful to the American Museum of Natural History and the Metropolitan Museum of Art for permission to sample specimens for compositional analysis. This material is based upon work supported by the National Science Foundation under Grant No. BNS76--3397. Aspects of the investigation were carried out under the auspices of the U. S. Department of Energy. 

Professor von Hevesy and Thai Jantzen separated hafnia from zirconia by repeated recrystallization of the double ammonium or potassium fluorides (20, 26). Metallic hafnium has been isolated and found to have the same crystalline structure as zirconium. A small specimen of the first metallic hafnium ever made is on permanent display at the American Museum of Natural History in New York City. Dr. von Hevesy, who prepared it, presented it to the Museum for the collection of chemical elements (29). A. E. van Arkel and J. H. de Boer prepared hafnium by passing the vapor of the tetraiodide over a heated tungsten filament (26, 30). 

Traditionally, synthetic diamonds are made from graphite. Since the 1950s, scientists have known how to use pressure and heat to manufacture synthetic diamonds. Gradually, the quality of the synthetic gems has improved. Today, it is difficult to tell a good synthetic diamond from a natural stone. According to the American Museum of Natural History, currently about 80 tons of synthetic diamonds are manufactured each year. 

American Museum of Natural History XXXII-1 (1930) XXXV-2 (1935). 

Pleistocene Epoch, courtesy The American Museum of Natural History. c Fossilized specimen, courtesy The American Museum of Natural History. d Collagenous material extracted with boiling water for 2 hrs. 

Ward C. Wheeler (4), Department of Invertebrates, American Museum of Natural History, New York, New York 10024 Holly A. Wichman (22), Department of Biological Sciences, University of Idaho, Moscow, Idaho 83843... 

Newer techniques have allowed the isolation of nucleic acids from preserved specimens.1 Because DNA isolation requires the destruction of preserved material, this aspect of obtaining tissue necessitates new procedures in the handling of museum specimens and in the protocols that investigators will follow to gain access to museum specimens. As an example, we outline the procedures that the American Museum of Natural History currently has in effect, or intends to place into effect. Other museums will undoubtedly have different procedures, so we recommend strongly that individual institutions be consulted when material is needed. 

Hennig86 was written by James S. Farris (American Museum of Natural History, New York, NY 10024). It is a fast and effective parsimony program. It is often faster than PAUP but has many fewer features and options. However, Hennig86 does contain a routine for successive approximation a posteriori character weighting. 

Nineteen archaeological pre-Columbian textile specimens from the collections of the American Museum of Natural History and the Metropolitan Museum of Art were examined. The textiles (Huari/Tiahuanaco, lea, Paracas-Caver-nas, and Paracas-Necropolis) are described. Elemental analyses for archaeological textile and modern wool samples (C, H, N, S, and ash) are reported. Elemental analyses for samples treated with distilled H20 and CClk are compared with analyses of modern wool samples similarly treated. An unambiguous direct correlation between loss of sulfur and embrittlement could not be made. The possibilities of dating and provenance determination by technical means are discussed. 

Specimen Selection. Specimens supplied by the American Museum of Natural History and the Metropolitan Museum of Art were chosen for well documented archaeological excavations. Most of the specimens... 

AMNH denotes the American Museum of Natural History. b MMA denotes the Metropolitan Museum of Art. c Single strands taken from the same mantle. d Samples from same trophy head. 

Thomas, D. H. Anthropological Papers of the American Museum of Natural History 1987, 63, Part 2, p 57. 

We are indebted to Roy Middleton of University of Pennsylvania for calling our attention to reference 19 and for T. A. Tombrello and D. A. Papanastassiou of the California Institute of Technology for their collaboration. We are also grateful for material provided by the late Glynn Issac of Harvard University as organized and revised by Martha J. Tappen and commented upon by Eric Trinkaus of the University of New Mexico. We also appreciate the comments of A. J. T. Jull of the University of Arizona and Eric Delson of the American Museum of Natural History, New York on an earlier draft. This is contribution 87/7 of the Institute of Geophysics and Planetary Physics, University of California, Riverside. 

We examined first the archaeological materials for dyestuflF identification at the request of Junius Bird of the American Museum of Natural History on behalf of Peter Gerhard who was studying the distribution of the shellfish purple dye. This dye is believed to have been used in ancient times in Central and South America and in Mexico and is still in use on the west coast of Mexico. The results of his work have been published 11), and we will confine our comments to the analytical... 

Landman, Neil H.j Mikkelsen, Paula M.j Bieler, Rudiger et ad. (2001). Pearls A Natural History. American Museum of Natural History, and The Field Museum. 

Myers CW, Daly J W, and Malkin B (1978) A dangerously toxic new frog (Phyllobates) used by Embera Indians of Western Columbia, with discussion of blowgun fabrication and dart poisoning. Bulletin of the American Museum of Natural History 161 307-366. 

American Museum of Natural History, New York Read before the Academy April 30, 1927... 

Whitford, A.C. Textile Fibers Used in Eastern Aboriginal North America. American Museum of Natural History, Anthropology Papers, vol. 38, Part I, 1941. 

Frank Aloise (drawing) — 187 Aluminum Company of America — 95 American Museum of Natural History — 17, 51-55, 90 Atomic Energy Commission — 161... 

He used S. ellipeoideus var. Steinberg, No. 637 of American Museum of Natural History and S. ellipsoideus var. yeast No. 45, University of California. He found that the production of glycerol was favored by alkaline reaction and a temperature between 30° C. and. 32° C., and obtained a yield of 3.1 to 3.3% glycerol. 

Schwarz, H.F. 1948. Stingless Bees (Melip-onidae) of the Astern Hemisphere Bulletin of the American Museum of Natural History 90 1-536. 

The roots of my mother, Bella Greenberg, are similarly Russian. She first took me as a young child to see the Halls of Dinosaurs at the American Museum of Natural History, encouraged my early interest in reading, and gently helped remove hundreds of newborn praying mantids... 

C. M. Breder, Bulletin of the American Museum of Natural History 106, 173 (1955). [1-24] D. W. Crowe, in Fivefold Symmetry (I. Hargittai, ed ). World Scientific, Singapore... 

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