spinal column is mounted thirteen feet in length, and with 

 ribs eighteen inches longer than those of the female. Its skull 

 measures forty-two inches between the cores of the horns, from 

 which an estimate may be made of the enormous spread of 

 these weapons of offense and defense as they once were in all 

 their glory. The elephantus imperialis or imperiator, which 

 exceeded in size the Mastodon and Mammoth, is represented 

 by an enormous humerus and femur, and hopes are entertained 

 that' among the tons of unassorted fossils remaining to be ex- 

 amined, enough of the other parts will be round to furnish an 

 entire skeleton. 



In the cases are displayed the complete skeletons of a 

 sabre-tooth tiger and giant wolf articulated, with the bones 

 spaced and labelled for examination, and a series of wolf bones 

 of adults and young for study of comparative anatomy. 



There are also to be seen the humerus and pelvis of an 

 extinct lion of the African type and we did have the skull, ex- 

 cavated from our concession in the Urea beds, but it has mys- 

 teriously disappeared. 



It would be tedious to enumerate everything now shown 

 in our Exhibition room, but the cases contain several skulls of 

 the sabre-tooth, the giant wolf; four distinct species of the ex- 

 tinct coyote, skulls and bones of birds and fowls of the air and 

 water and parts of the camel and giant horse. 



Although this hall has not been thrown open to the pub- 

 lic, Mr. Daggett, the general superintendent, is always glad 

 to welcome any member of our Academy for an inspection of 

 these treasures. 



Professor Twining presents the results of some late inves- 

 tigations of the properties of electricity. Ignoring the theory 

 of potential energy, now rejected by all scientists, after a con- 

 sideration of kinetic energy, the conservation of energy and 

 the known properties of the electron, he advances some theories 

 of his own, the results of many experiments before his pupils 

 and in the quiet of his laboratory, which undoubtedly will at- 

 tract the attention of advanced students in electricity. 



We commend this paper to all who are interested in this 

 branch of Science. 



Upon another page is shown an half-tone of two growths 

 which sprang from seeds of the Brownea hybrida, which were 

 brought from India and planted by Mr. II. Ilerhe in his nursery. 



54 



