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Previous Issue: Vol. 21, No. 537, May 19, 1893
Next Issue: Vol. 21, No. 539, Jun. 2, 1893
The Norian Rocks of Canada, pp. 281-282
- Andrew C. Lawson
Geology of Tucumcari, New Mexico, pp. 282-283
- W. F. Cummins
The Marine Biological Station of the University of Texas, p. 284
- Charles L. Edwards
Method of Making a Sanitary Investigation of a River, pp. 284-285
- Chas. C. Brown
Notes and News, p. 285
[Editorial Notes], p. 286
Sign Language in Print, p. 286
- Frederick Starr
Current Notes on Anthropology.--XXVIII, pp. 286-287
- D. G. Brinton
Letters to the Editor
- Sham Biology, pp. 287-289
- Henry F. Nachtrieb
- On Methods of Defending the Existence of a Sham Biology in America, pp. 289-291
- Conway MacMillan
- Photographs of Scientific Men, p. 291
- Marcus Benjamin
- The Palæolithic Man in Ohio, p. 291
- Henry W. Haynes
Book-Reviews
- ----------------, p. 291
- Mineral Resources of the United States. 1891
- David T. Day
- Review author[s]: C. P.
- ----------------, pp. 291-293
- William Gilbert of Colchester, On the Loadstone and Magnetic Bodies
- P. Fleury Mottelay
- Review author[s]: R. A. F.
Back Matter (3 pp.)
Previous Issue: Vol. 21, No. 537, May 19, 1893
Next Issue: Vol. 21, No. 539, Jun. 2, 1893