science: 



Sixth Year. 

 Vol. XII. No. 292. 



NEW YORK, September 7, 1888. 



Single Copies, Ten Cents. 

 I3.50 Per Year, in Advance. 



Kuterod at Now York Post-Offloe as Seoond-Olaas Mnil-Matter. 



Editorial ...... 



The Mining Districts of Arkansas. — Forests in South Africa. 

 — Loss of the ' Geiser.' — Studying Hurricanes in their 

 Homes. 



Phosphorus Pentoxide as a Disinfectant 

 Health Matters. 



Wounds of the Abdomen . 

 Antiseptic Ammunition 

 A Medico-Legal Case 

 Vaccine vs. Bovine Viius . 

 The Microbe of Dysentery 



Electrical Science. 



The Danger of Alternating Currents 



A New Electro-dynamometer 



A Liglit-Weight Primary Battery . 



Mental Science. 



The Effect of Practice upon Reading 



The Effect of Stimulants upon the Re-action Time 



109 



109 



no 

 III 

 III 



HI 



III 



III 

 112 

 112 



112 

 113 



Book-Reviews. 



Logic ; or, The Morphology of Knowledge . 



Sound, Light, and Heat . 



The Spirit of Beauty 



How to study Geography . 



The History of Protective Tariff Laws 



Notes and News 

 Letters to the Editor. 



Exploration of tlie Xingu . . . Orville A . Derby 



Proceedings of the Society for Psychical Research 



F. W. If Myers 

 Effigy Mounds in Northern Illinois . . T. II. Le-.uis 



The Coal-Measures of Kansas . . /- C. Wooster 



Radiant Energy . . A. H . MacKay; The Editor 



The Laws of Corrasion . Russell Hinman; The Editor 



A Notable Evolution . . E. P. Powell 



Queries . . • • • • 



114 

 114 

 114 

 114 

 I'd 

 116 



118 

 118 

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 ug 

 1:9 



120 

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ECLECTIC PHYSICAL GEOGRAPHY. 



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151 Cuts and Diagrams. 



"•h- 7,. 



The Eclectic Physical Geography 



DIFFERS WIDELY FROM THOSE IN GENERAL USE. 



1. The Charts are distinct and graphically accurate. Each chart presents but a single set of 



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2. No scientific knowledge on the part of the young student is assumed. 



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4. Phenomena are not simply described, but are traced to proximate causes. 



5. The treatment of Erosion is not dismissed with the usual brief paragraph. Nearly every 



chapter finds in erosion a cause or an effect. 



6. It discards the theory that the secular cooling and contraction of the planet is the main 



cause of the present relief of the globe. 



7. The chapters on Life, and on Weather and Climate, are full and in conformity to modern 



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