MORAL ASPECT OF SLEET. 203 



most or all of the specimens and drawings with observations on the lar- 

 vae and transformations. 



The entomologist next claiming our attention, in the order of time, 

 is Dr. Thaddeus \V, Harris, of Harvard University. He has written 

 many valuable papers, which place him in the front rank of our natu- 

 ralists ; but his most important work is a Treatise on some of the in- 

 sects of New England which are injurious to vegetation. 8vo. pp. 459. 

 This work I would most cordially recommend to every beginner in en- 

 tomology. 



Various other papers on our insects have appeared in Periodicals, 

 and Transactions of learned societies. Several by Prof. Hentz — by Dr. 

 Gould — by Prof. Halderaan, so favorably known by his splendid work 

 on the fresh water univalve molluscae of our country — by Dr. F. E. 

 Melsheimer, whom I regard as the best practical entomologist of the 

 country, and not far behind any of them in the scieniijic department — 

 by Rev. D. Ziegler, and Prof. Potter, of Baltimore, who published a 

 pamphlet on cicada scptemdecbn^ (seventeen year locust.) 



An attempt was made some years ago by Titian R. Peale, of Phila- 

 delphia, to publish a work on our Lepidoptera, with plates, but after the 

 issue of several numbers the laudable enterprise failed for want of suffi- 

 cient patronage. 



In Aug., 18 12, the Entomological Society of Pennsylvania, was form- 

 ed at York by a few energetic naturalists, who are prosecuting the sci- 

 ence with very commendable zeal. They have nearly completed a cat- 

 alogue of the Coleoptera of the United States, and have described and 

 published several hundred new species. 



It is gratifying to learn that the new association of geologists and 

 naturalists, at their late meeting in Hew Haven, directed their attention 

 to this subject. A committee was appointed to prepare a IManual o( 

 North American Coleoptera. The committee are Dr. Melsheimer and 

 J. Lcconte, Jun., and we may before long look for something worthy of 

 their distinguished abilities. 



This is, as far as could be ascertained, an imperfect sketch of the 

 history of Entomology in our country. The science is advancing, and 

 new laborers are entering the field every year it is hoped that the num- 

 ber may soon be very large. 



MORAL ASPECT OV SLEEP. 



The constitution of man is such that his capacity to receive sensa- 

 tioHb fium t-Lirrouudiiig objects, ajid to migrate from locality to locality 



