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Previous Issue: Vol. 21, No. 533, Apr. 21, 1893
Next Issue: Vol. 21, No. 535, May 5, 1893
The Topographic Maps of the United States Geological Survey, pp. 225-227
- W. M. Davis
Sun-Heat and Orbital Eccentricity, pp. 227-228
- Ellen Hayes
On A Physiological Classification of the Ophidia -- with Special Reference to the Constrictive Habit, pp. 228-229
- Arthur Stradling
Notes and News, p. 229
[Editorial Notes], p. 230
Observations on Gophers and Moles in Oregon, p. 230
- F. L. Washburn
One of the Gypsum Crystals from the Cave at South Wash, Wayne Co., Utah, pp. 230-231
- Alfred J. Moses
Distance and Color Perception by Infants, pp. 231-232
- J. Mark Baldwin
Letters to the Editor
- The Convex Profile of Bad-Land Divides, pp. 232-233
- L. E. Hicks
- The Moon's Atmosphere, p. 233
- W. H. Howard
- Note on the Crystalline Lens of the Eye, p. 233
- R. W. Shufeldt
- The Aurora, pp. 233-234
- M. A. Veeder
- Where Is the Litre?, p. 234
- Stephen H. Emmens
- Sham Biology in America, pp. 234-235
- Henry F. Osborn
- Cedar Waxwings, p. 235
- P. L. Hatch
- An Appeal to Naturalists, pp. 235-236
- Charles Sedgwick Minot
Book-Reviews
- ----------------, p. 236
- ----------------, pp. 236-237
- Review author[s]: W.
- ----------------, p. 237
- The Story of the Atlantic Telegraph
- Henry M. Field
- ----------------, p. 237
- The Voltaic Cell
- Park Benjamin
- Review author[s]: R. A. F.
Back Matter (3 pp.)
Previous Issue: Vol. 21, No. 533, Apr. 21, 1893
Next Issue: Vol. 21, No. 535, May 5, 1893