The American Journal of Science, Volumes 171-172 (Google eBook)

Front Cover
J.D. & E.S. Dana, 1906 - Science
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Contents

The Behavior of Ferric Chloride in the Zinc Reduc
128
A New Name for the Dinosaurian Genus Ceratops
144
SCIENTIFIC INTELLIGENCE
170
Geology and MineralogyStatus of the Mesozoic Floras of the United States
182
Magnetic Field and Coronal Streamers by
189
Glaciation of Orford and Sutton Mountains Quebec
196
Drawing of Crystals from Stereographic and Gno
206
A Suggested Cause of Changes of Level in the Earths
216
Occurrence of Sulphur and Celestite at Maybee
237
Local Predictions for the Total Eclipse of the Sun
245
Geology and MineralogyUnited States Geological Survey C D Walcott
254
Some Peculiarities of RockWeathering
261
The Colorimetric Determination of Small Amounts
270
Wasatch and Wind River Primates by F
277
A New Occurrence of PseudoLencite by C
286
The Reformation of SodaLeucite by T T Read
294
Some Phosphorescent Calcites from Fort Collins
301
On the Chromates of Csesium by F R Fraprie
309
Descriptions of two remarkable new species
317
SCIENTIFIC INTELLIGENCE
324
Miscellaneous Scientific IntelligenceContribution to the Oceanography
337
A Telephone Relay by J Trowbridge
339
Stony Meteorite from Coon Butte Arizona by
347
New Stony Meteorite from Modoc Scott County
356
Siderite and Barite from Maryland by W
364
PreCambrian Rocks of the Georgetown Quad
371
Lower Paleozoic Formations in New Mexico
390
SCIENTIFIC INTELLIGENCE
396
Geology and MineralogyGeology Chamberlin und Salisbury 400 Traite
406
RadioActivity of the Salts of Radium
409
RadioActivity of Thorium Minerals and Salts
415
Radioactivity of Thorium by H M Dadou
427
The Radioactivity and Composition of Thorium
433
Prorosmarus alleni a new genus and species of Walrus
444
A new form of Container for use in Museums
451
XLIILAge and Type Localities of the Supposed Jurassic
457
Note on two interesting Pseudomorphs in the McGill
47
Estacado Aerolite by K S Howard and J M
55
Stibiotantalite by S L Penfield and W E Ford 61
61
SCIENTIFIC INTELLIGENCE
78
Geology and MineralogyPreliminary Report of the State Earthquake Inves
88
ObituaryDr Ernst Schellwien 94
94
Dakotan Series of Northern New Mexico by C
124
Colloidal Nuclei and Ions in Dustfree Air saturated
136
Russian Carboniferous and Permian compared with
143
Notes on Some Eruptive Rocks in Mexico by F
159
Hydrolysis of Salts of Iron Chromium Tin Cobalt
176
SCIENTIFIC INTELLIGENCE
185
C R von der Osten Sacken L Brackebusch
194
Abyssal Igneous Injection as a Causal Con
195
Some Interesting Beryl Crystals and their Associa
217
Schistosity by Crystallization A Qualitative Proof
224
Fractured Bowlders in Conglomerate by M
231
Occurrences of Unakite in a New Locality in Vir
248
Analysis of Dithionic Acid and the Dithionates
259
Samuel Lewis Penfiet d 353
353
Conductivity of Air in an Intense Electric
368
Hydrolysis of Salts of Ammonium in the Presence
379
Minerals of the Composition MgSiO A Case
385
Contributions to the Geology of New Hamp
439
SCIENTIFIC INTELLIGENCE
458
Geology and MineralogyTenth International Geological Congress at Mexico
467
Miscellaneous Scientific IntelligenceA TextBook in General Zoology H
476
Relative Activity of Radium and Thorium
477
Iodometric Determination of Basic Alumina
483
Contributions to the Geology of New Hamp
493
XlftV Yttrocrasite a New YttriumThoriumUranium
515
Ceanothus Americanus L and ovatus Desf
523
Photometric Measurements on a Person Pos
531
Note on the Production of Radium by Actinium
537
GeologyNew Zealand Geological Survey J M Bell 542 Illinois
543

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Page 81 - Mendocino. Along the 185 miles of this rift where movement has actually been observed the displacement has been chiefly horizontal on a nearly vertical plane, and the country to the south-west of the rift has moved north-westerly relatively to the country on the north-east of the rift. By this it is not intended to imply that the north-east side was passive and the south-west side active in the movement. Most probably the two sides moved in opposite directions. The evidence of the rupture and of...
Page 363 - Mt Antero, Colorado. Ibid., 213-216. Results obtained by etching a Sphere and Crystals of Quartz with Hydrofluoric Acid (with Otto Meyer).
Page 182 - has for its chief characteristic the well-known and very valuable quarries of the Waverly system that lie along the Ohio River below Portsmouth. This subdivision has a definite base, viz., the upper surface of the Waverly black slate ; but there is no characteristic stratum that constitutes a convenient superior limit. As the most valuable of the building rock, however, that is furnished by this part of the series in southern Ohio occurs within fifty feet of the slate, these fifty feet next above...
Page 121 - ILLUSTRATIONS OF THE CGS SYSTEM OF UNITS. With Tables of Physical Constants. By Prof. JD Everett.
Page 82 - The great length of the rift upon which movement has occurred makes this earthquake unique. Such length implies great depth of rupture, and the study of the question of depth will, it is believed, contribute much to current geophysical conceptions. The time of the beginning of the earthquake as recorded in the observatory at Berkeley was 5(1.
Page 81 - Besides this general horizontal displacement of about 10 feet, there is observable in Sonoma and Mendocino counties a differential vertical movement not exceeding 4 feet, so far as at present known, whereby the south-west side of the rift was raised relatively to the north-east side, so as to present a low scarp facing the north-east. This vertical movement diminishes to the south-east along the rift line, and in San Mateo County is scarcely, if at all, observable.
Page 178 - ... material. When considered in its entirety, the vertebrate fauna of these beds is remarkably similar to, though distinctly more primitive than, that of the Laramie. Almost or quite all of the Laramie types of vertebrates are present, though, as a rule, they are represented by smaller and more primitive forms. The similarity between this fauna and that of the Laramie contrasts strongly with the great dissimilarity between the vertebrates of the Judith River and those of the Atlantosaurus beds,...
Page 37 - ... distilled water at the exact stem divisions observed in the sample water, we have nine pairs of readings, each pair giving the weights of equal volumes of distilled water and of the sample, and therefore each pair giving by their ratio an independent determination of the specific gravity of the sample, referred to that of distilled water of the same temperature as unity. The mean of the nine observations gives a result which, according to the doctrine of probabilities, should have a precision...
Page 302 - The incrustation is especially interesting as showing that the meteoric irons must have been imbedded a long time, as the formation of aragonite would be exceedingly slow in this dry climate. The remarkable quantity of oxidized black fragmental material that •was found at those points where the greatest number of small fragments of meteoric iron were found, would seem to indicate that an extraordinarily large mass of probably 500 or 600 pounds...
Page 103 - ... fine-grained, shows a considerable decrease in compressibility and this tendency to decrease persists even at high pressures". In this same connection, it is interesting to note that Adams and Coker1 had investigated the effects of grain size, including a granite in the trial runs, and concluded: "It will thus be seen that there is no correspondence between the coarseness of grain and the magnitude of the variations in the readings obtained.

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