195 



The next work of this author is The Lichens of California, Oregon, 

 and the Rocky Mountains, so far as yet known. Amherst, 1866. The 

 object of this work is, in the words of the author, "to show at the 

 beginning of careful exploration, exactly what is known of the Lichen 

 Flora of the west coast south of Vancouver's Island, and of the great 

 western system of mountains within the same range of latitude." He 

 also alludes briefly to his present views of system, which will be more 

 fully developed in a work on The Genera of North American Lichens, in 

 course of preparation, the appearance of which, we trust, will not long 

 be deferred. This catalogue enumerates 184 species, of which about 

 eighteen are new. An appendix gives descriptions of nine other new 

 species, four of which are from New England. 



Following this is The Lichens of the Hawaiian Islands, in the Pro- 

 ceedings of the American Academy of Science and Arts, 1867, com- 

 prising the Lichens collected by Mr. Mann, together with those 

 previously known. It contains 130 species, of which seven are 

 new. 



The Geological and Natural History Survey of North Carolina, Part 

 III, Botany, by Rev. M. A. CURTIS, D. D., Raleigh, 1867, contains a list 

 of 217 lichens of that State, with brief indications of their stations. 

 A note from the author says : " The list was arranged by Professor 

 Tuckerman some seven or eight years ago. His present views are 

 different." Professor Tuckerman desires it to be understood that he 

 declines to acknowledge it, being made up of an old list, x with changes 

 and additions which he was not permitted to see. 



In a paper in the American Naturalist for April, 1868, Professor 

 TUCKERMAN discusses the question, Can Lichens be identified by chem- 

 ical tests ? and expresses himself inclined to the negative opinion. 



To complete the record of Professor TUCKERMAN'S labors, we have 

 to mention Lichenes Americce Septentrionalis exsiccati, Cambridge, 1847 

 -1855, a valuable collection of specimens of about 150 species of North 

 American Lichens, and Caroli Wright Lichenes Insulce Cubce curante 

 E. Tuckerman, Boston, 1864, a collection of the Lichens of Cuba, which, 

 as we have above mentioned, are described in the Observations. 



OLNEY'S Catalogue of Rhode Island Plants, published in Vol. I. of the 

 Proceedings of the Providence Franklin Society, Providence, 1846, 

 contains a short and incomplete list of Lichens, comprising twenty- 

 four species. Among them are Calicium tympanellum Ach., and Bor- 

 re.ro, ciliaris Ach. ; but it is doubtful whether the plants thus named 

 were genuine specimens. 



DARLINGTON'S Flora Cestrica, third edition, Philadelphia, 1853, con- 

 tains a list of Lichens of Chester county, arranged by Dr. Michener, 

 with descriptions condensed from Tuckerman's Synopsis. It enume- 

 rates 105 species, of which the author says : " About twenty were never 



