14 JOURNAL OF THE 



ure hours, during his Hfe as a teacher, were devoted to these 

 studies. 



He was an intimate friend and co-worker with the well 

 known entomologist, Harris, as the publications of the Bos- 

 ton Society of Natural History will testify. 



He was very fortunate in selecting the spiders as his special 

 field of study, for little or nothing at that time had been pub- 

 lished on North American Spiders. His time was given to 

 the observation of their habits, and to the collection, descrip- 

 tion and representation of the various species. He published 

 a few papers in Silliman's Journal, and in the Journal of the 

 Philadelphia Academy of Arts and Sciences, and then 

 brought together his extensive series of notes and paintings, 

 and offered them to the Boston Society of Natural History 

 for publication in its Journal. The publication of these ex- 

 tended over a number of years, A few years ago, as many 

 of the publications were out of print, the Council of the So- 

 ciety determined to republish, in a connected form, all of 

 Hentz's arachnological writings. When this was done, a 

 considerable number of notes and descriptions were added by 

 Mr. J. H. Emerton, who has paid much attention to our na- 

 tive spiders. A few notes were also added by Mr. Wm. E. 

 Holden of Marietta, O. 



After Hentz's death, his collection of spiders went into the 

 hands of the Boston Society, but has since been nearly de- 

 stroyed.^ G. F. Atkinson. 



LIST OF THE WRITINGS OF PROF. HENTZ. 



1821. A notice concerning the spider whose web is used in medicine 

 {Tegenaria medic'inalis) Jour. Phil. Acad. Nat. Sci., II., p. 53-55. 



1825. Soma observations on the Anatomy and Physiology of the Alli- 

 gator of North America. Trans. Am. Phil. Soc, II., pp. 216-338. 



1835. Description of some new species of North American Insects. 



Jour. Phil. Acad. "Nat. Sci , V. pp 373-375. 



1829. The same paper in Ferusac's Bulletin des Sciences Naturelles, 

 XViri.,pp 475-476. 



1830 Description of eleven new species of North American Insects. 



Trans. Amer. Soc, III,, pp. 253-258. 



*The Spiders of the United States by Nicholas Marcellus Hentz, M. D. 

 Occasional Papeis of the Boston Society of Natural History, II, Preface 



