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Previous Issue: Vol. 13, No. 323, Apr. 12, 1889
Next Issue: Vol. 13, No. 325, Apr. 26, 1889
Front Matter (1 p.)
The Loomis Electric-Light System, pp. 291-292
Ayrton and Perry's Improved and New Ammeters and Voltmeters, pp. 293-294
- Ayrton; Perry
An Electric Door-Opener, p. 294
Building-Stones of East Texas, p. 295
Texas Asphaltum, p. 295
Exploration in Mexico, pp. 295-296
Health Matters, pp. 296-297
Electrical News, pp. 297-298
Notes and News, pp. 298-301
[Editorial Notes], p. 302
The Study of the Deaf, pp. 302-303
The Marine Biological Laboratory, pp. 303-304
Report of the Health-Officer of the Port of New York, pp. 304-305
Book-Reviews
- ----------------, p. 305
- The Student's Atlas
- Richard A. Proctor
Among the Publishers, pp. 305-307
Letters to the Editor
- The Robinson Anemometer, p. 307
- H. A. Hazen
- Surveys, Their Kinds and Purposes, pp. 307-309
- Herbert G. Ogden
- English Examinations, pp. 309-310
- Peter T. Austen
Back Matter (4 pp.)
Previous Issue: Vol. 13, No. 323, Apr. 12, 1889
Next Issue: Vol. 13, No. 325, Apr. 26, 1889