TRIBUNE POPULAR SCIENCE. 



PART III. 



TABLE OF CONTENTS. 



THE ACADEMY OF SCIENCES MEETING 

 AT WASHINGTON: 



PAGK. 



CERTAIN DESTKUCTIVE INSECTS John Le Coiite, 



M.D ............................................. 2 



AN AUTOMATON TO PLAY TIT-TAT-TOO Prof . Fair- 



man Rogers ................................. .... 2 



FUNCTIONS AND MECHANISM OF AUDITION Pmf. 



A M. Mayer ..................................... 3 



DURATION OF THE SENSATION OF SOUND Prof. A. 



M. MAYER ........................................ 3 



REFLECTION OF SOUND FROM FLAMES AND GASES 



I 'i-< if. A. M. Mayer ............................... 4 



TESTS OF THE STRENGTH OF PINE WOOD Prof. W. 



A. Norton ........................................ 4 



FUNCTIONS OF THE BRAIN AND NERVES Dr. C. E. 



Brown-Sequard .................................. 5 



OBSERVING THE TRANSIT OF VENUS Prof. SilllOU 



Newcomb ........................................ 7 



THE COLORADO CANONS Major J. "W. Powell ..... ! 



THE TIDES OF TAHITI Prof. Win. Ferrel. ........ 10 



METAMERISM IN INORGANIC CHEMISTRY Prof. 



W.ilcott Gibbs ................................... 10 



VELOCITY OF LIGHT IN AIR AND IN VACUO Prof. 



S. Alexander .................................... 11 



RKCENT WESTERN EXPLORING WORK Prof. F. V. 



Hayden ..... . ................. , .......... ( ........ 11 



MINERALOGICAL NOTES Prof . B. Silliinan ........ 12 



THE LAWS OF CYCLONES Prof. Win. Ferrel ...... 12 



RESULTS OF THE POLARIS EXPEDITION Dr. E. 



Bessels ......... : .......... .............. 14 



THE GREAT TELESCOPE AT WASHINGTON Prof. S. 



THE LAWS OF STORMS Prof. Elias Looiuis 18 



LOWER SILURIAN FOSSILS Prof. J. S. Newberry . . 18 

 How THE EARTH WAS FORMED Capt. C. E. Button 19 



ASSYRIAN RELICS: 



A COLLECTION OF COPIES AT THE SMITHSONIAN 

 INSTITUTION 21 



THE POET LONGFELLOW: 



A LECTURE by Mr. James T. Fields 'J3 



THE HOUSE IN AMERICA (Illustrated): 

 PROF. O. C. MARSH'S DISCOVERIES IN FOSSILS.. . '_'<> 



HAVE WE TWO BRAINS? 

 A LECTURE by Dr. C. E. Brown-Sequard 2'J 



U. S. SURVEY OF THE WEST (WITH MAP): 

 EXPLORING EXPEDITIONS under Lieut. G. M. Wheel- 

 er .. .35 



THE EFFECTS OF ALCOHOL: 

 AN ADDRESS by Win. A. Hammond, M.D 45 



THE TRANSIT OF VENUS: 

 A BRIEF ACCOUNT OF THE PREPARATIONS OF ALL 

 NATIONS. . 53 



AMERICAN ORIENTAL SOCIETY MEETING 

 AT BOSTON: 



AUTHORSHIP AND .AUTHENTICITY OF BOOKS <T 



THE OLD TESTAMENT Prof. F. Adler """> 



HEART, LIVER, -.AND LUNGS, ETYMOLOGICALI.V Cou 

 . . SIDERED Hon. J. H. Trurubull. ...:.: " 



.THREE OF JUPITER'S SATELLITES Prof . S. Alex- 

 der ........... ... ............................... 



SAFETY'AT SEA (Illustrated 

 IRON STEAMERS THAT WILL NOT SINK 



