IOWA ACADEMY OF SCIENCES. 171 



Reached 150 numbers. Short notices of these will be found as 

 follows: Botanische Zeitung 7: 533. 20 Jl 1849; Flora 15: 

 (new series) 88. 14 F. 1851; 18: 173-175. 21 Mr 1860. 



66. . A synopsis of the Lichens of the north- 

 ern United States and British America. Proc Am Acad. Arts 

 and Sci. 1 : 195-285. 1848. Read December 7, 1847. Describes 

 275 species. 



67. ; in Lea, T. G. Catalogue of the plants, 



native and naturalized, collected in the vicinity of Cincinnati, 

 O., during the years 1834-1844; Philadelphia, 1846. List of 

 fifty-three species; one new. 



68. , in Agassiz, L. Lake Superior, its 



Physical Character, Vegetation and Animals, Compared With 

 Those of Other and Similar Regions. Boston. 170-174. 

 Mr 1850. List of seventy-two species and varieties; four new. 



69. . Supplement to an Enumeration of 



North American Lichenes. Amer. Jour. Sci. and Arts (second 

 series) 25: pp. 422-430. 1856. Short descriptions of thirty-nine 

 new North American lichens. 



70. . Supplement continued. Amer. Jour. 



Sci. and Arts 28: 200-206. 1857. Describes twenty- two new 

 North American lichens. 



71. Observations on North American and Some Other 

 Lichens. Proc. Am. Acad. Arts and Sci. 4: 383-407. 1860. 

 Notes on fifty-one species and varieties, including descriptions 

 of four new ones. 



72. . Observations on North American and 



Some Other Lichens. Proc. Am. Acad. Arts and Sci. 5: 

 383-422. 1862 Notes on fifty-five species and varieties; about 

 two-thirds new. 



73. Observationes Lichenologicse. Proc. Am. Acad. Arts 

 and Sci. 12: 263-287.1866. (Read April 12, 1864.) Treats of 

 forty-eight species, thirty-seven being new. 



74. . Lecidea elabens Fr. Flora 58: 63-64. 1 



F 1875. A note concerning. 



75. . Observationes Lichenologicse. Proc. 



Am. Acad. Arts and Sci. 12: 166-185. 1877. Notes on forty- 

 three species and varieties, thirty-one being new. 



76. . List of Lichens collected in the vicinity 



of Annanactook harbor, Cumberland Sound about Lat. 67° N. , 

 Long. 68° 49' W. Bull. United States Nat. Mus. 15: 167-168. 

 1879. Lists fifty-three lichens. 



