The Popular Science Monthly 



Bntered in the Pott Office in Lanecuter, Pa., as aeoond-elcus matter. 



CONTENTS OF NOVEMBER NUMBER 



Deductions from the Records of Running in the Last 

 Olympiad. Professor A. E. Kennelly. 



Monte Alban and Mitla as the Tourist sees them. Pro- 

 fessor Charles Joseph Chamberlaik. 



The Rotation of Crops. Samuel Feaseb. 



The Public School Teacher in a Democracy. Dr. Heiibt 



R. LiNVILLE. 



Celibate Education To-day. E. 8. 



The Inadequacy of Speech. Dr. Chas. W. Supeb. 



Zoology. Professor Henky E, Ceampton. 



Experiments with Langley's Aerodrome. The Late Dr. 

 S. P. Langlet. 



The Progress of Science : 



The Fiftieth Anniversary of the Announcement of 

 the Theory of Natural Selection ; The Dublin Meeting 

 of the British Association : The Present Pandemic 

 Of the Plague ; Scientific Items. 



CONTENT- Cr DECEMBER NUMBER 



The Cause cf Pulsation. Er. Alfeed Goldsboeough 



JS; A. TEE. 



A Bio raphical History if Botf.i y at ZK Louis, Missouri, 



Dr. PeRLEY bi-AULDING. 



The Apr'icatlon of Z'ological L«.vs to Man. Professor 



"WILLLA.M RiDGWAY. 



Canadian 'W i-eat. Professor J( n Waddbll, 



College fctandardization. Professor W. Le Contb 



Stevi..- 5. 

 Aspec-s of Modem Biology. Professor T.D. A.Cockebell. 

 Loyalty. Professor .^ohn C. Bbannee. 

 The Story cf Professor Rontgen's Discovery. Elheb 



Ellshoeth Burns. 



A Great Permita Delta and its Vertebrate Life, with 

 Restoiiidons k-y the A athor. Dr. E, C. Case. 



The Prdgr s c f Ccience : 



Two £,reat University Presidents ; Scientific Items- 

 Index to Volume LXXIIL 



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