Table of Contents

April 1891; Volume s3-41,Issue 244

General geochemistry

You have access
On allotropic silver
M. Carey Lea

American Journal of Science April 1891, s3-41 (244) 259-267; DOI: https://doi.org/10.2475/ajs.s3-41.244.259
You have access
Certain points in the estimation of barium as the sulphate
F. W. Mar

American Journal of Science April 1891, s3-41 (244) 288-295; DOI: https://doi.org/10.2475/ajs.s3-41.244.288

Structural geology

You have access
The phenomenon of rifting in granite
Ralph Stockman Tarr

American Journal of Science April 1891, s3-41 (244) 267-272; DOI: https://doi.org/10.2475/ajs.s3-41.244.267

Stratigraphy

You have access
The Redrock sandstone of Marion County, Iowa
Charles Rollin Keyes

American Journal of Science April 1891, s3-41 (244) 273-276; DOI: https://doi.org/10.2475/ajs.s3-41.244.273

Hydrochemistry

You have access
Volumetric composition of water
E. W. Morley

American Journal of Science April 1891, s3-41 (244) 276-288; DOI: https://doi.org/10.2475/ajs.s3-41.244.276

Hydrogeology

You have access
Volumetric composition of water
E. W. Morley

American Journal of Science April 1891, s3-41 (244) 276-288; DOI: https://doi.org/10.2475/ajs.s3-41.244.276

Mineralogy

You have access
On halotrichite or feather alum, from Pitkin County, Colorado
E. H. S. Bailey

American Journal of Science April 1891, s3-41 (244) 296-297; DOI: https://doi.org/10.2475/ajs.s3-41.244.296
You have access
On crystallized azurite from Arizona
Oliver Cummings Farrington

American Journal of Science April 1891, s3-41 (244) 300-307; DOI: https://doi.org/10.2475/ajs.s3-41.244.300
You have access
On pink grossularite from Mexico
Carlos F. de Landero

American Journal of Science April 1891, s3-41 (244) 321-323; DOI: https://doi.org/10.2475/ajs.s3-41.244.321

Vertebrate paleontology

You have access
New serpent from Iowa
R. E. Call

American Journal of Science April 1891, s3-41 (244) 297-299; DOI: https://doi.org/10.2475/ajs.s3-41.244.297
You have access
Restoration of Triceratops.
Othniel Charles Marsh

American Journal of Science April 1891, s3-41 (244) 339-342; DOI: https://doi.org/10.2475/ajs.s3-41.244.339

Igneous and metamorphic petrology

You have access
On the occurrence of xenotime as an accessory element in rocks
Orville Adelbert Derby

American Journal of Science April 1891, s3-41 (244) 308-311; DOI: https://doi.org/10.2475/ajs.s3-41.244.308

Economic geology, geology of ore deposits

You have access
On the magnetite ore districts of Jacupiranga and Ipanema, Sao Paulo, Brazil
O. A. Derby

American Journal of Science April 1891, s3-41 (244) 311-321; DOI: https://doi.org/10.2475/ajs.s3-41.244.311

Invertebrate paleontology

You have access
Development of the Brachiopoda
Charles Emerson Beecher

American Journal of Science April 1891, s3-41 (244) 343-357; DOI: https://doi.org/10.2475/ajs.s3-41.244.343