342 PROCEEDINGS OF THE AMERICAN ACADEMY 



On Magnetic Observations made at Harvard University. Memoirs 



Am. Acad., 1846. 

 On Corona? and Halos. Proc. Am. Acad., 1848. 



On the American Prime Meridian. American Journal of Science, 1850. 

 New Experiments and Modes of illustrating the Laws of Light and 



Sound. Proc. Am. Acad., 1852. 

 On Motions of Rotation. Proc. Am. Acad., 1852. 

 On Donati's Comet. Proc. Am. Acad., 1857. 

 Memoir upon the Secular Periodicity of the Aurora Borealis. Proc. 



Am. Acad., 1857. 

 On the Velocity of Light and the Sun's Distance. Proc. Am. 



Acad., 1862. 



This number of papers can be greatly increased by the addition 

 of his scientific essays and addresses. He also did much routine 

 scientific work in connection with the determination of longitude by 

 the Coast Survey, holding a position as Astronomer to the Survey 

 during the administration of Professor Benjamin Peirce. 



The subjects of sound and light, and wave motion in general, I have 

 said, were favorite ones with him, and he took great pleasure in adding 

 to the Physical Cabinet apparatus to illustrate these subjects ; so that 

 to-day they form the most complete portion of the apparatus for 

 demonstration which he left to his successors. I remember that he 

 once showed me an apparatus which he had devised for obtaining the 

 velocity of electricity, which combined in an ingenious manner the 

 apparatus in sound with which he was so familiar and certain arrange- 

 ments of electro-magnets. It is doubtful whether Professor Lover- 

 ing's contemporaries, who occupied chairs of Natural Philosophy in 

 American colleges can show so large an amount of scientific work as 

 he performed in addition to his college exercises. 



After listening to such appreciative words as we have heard from 

 those who have been the life-long friends of Professor Lovering, I feel 

 that my testimonial may seem scant. Those who attended his lectures 

 have a store of remembrances of his wise sayings, of his peculiar humor, 

 which often threw the light of a different philosophy from that which he 

 was professedly elucidating, and which showed that literary tendency 

 which made him capable of giving wise counsel over a wide range of 

 University matters. Strange to say I never heard one of his college 

 lectures, but I knew from conversations with him that he could present 

 a subject with a certain finish and fine deliberation which was the de- 

 spair of new beginners in the art of demonstration. I have seen him 

 prepare an experiment for a lecture with that patience which Balzac is 

 said to have devoted to his paragraphs, taking every possible care that 



