54 PROCEEDINGS OF THE AMERICAN ACADEMY 



we may infer that the reference here is due to a slip on the part of 

 Harvey's memory. He was doubtless thinking of Bailey's plant and 

 forgot, for the moment, that this had been collected in Virginia, and 

 not near Bailey's home in New York. 



Many students of American fresh-water alg£E since Harvey's time 

 have searched diligently in the hope of rediscovering this most inter- 

 esting species, but without success. For nearly forty years now, no 

 authentic report of the finding of Tuome)ja jiuviatUis has been pub- 

 lished. It is, then, a great pleasure to be able to announce that Mr. 

 Isaac Holden, a diligent student of our American algae, has found this 

 long lost plant in some quantity in a brook near Bridgeport, Conn. 

 The date of Mr. Holden's first discovery was December 16, 1888. 

 Since then it has been found in several places. Mr. Holden has 

 found it in several other localities near Bridgeport, and at Mount De- 

 sert Island on the coast of Maine, nearly three hundred miles distant 

 from Bridgeport. Mr. E. B. Harger also has found it in large quan- 

 tity in a brook near his home in Oxford, Conn. These several locali- 

 ties added to the two given by Harvey show that the range of Tuomeya 

 JiuviatUis extends along our whole Atlantic border, from INIaine to 

 Alabama, a distance of about twelve hundred miles. "We may also 

 expect that it will be found farther inland.* 



It will be best, perhaps, before proceeding farther, to give the rea- 

 sons for considering that our plant is the genuine Tuomeya JiuviatUis 

 of Harvey. It was first compared with the description which Harvey 

 gives in the Nereis, and was found to agree with it in every respect. 

 Harvey's description, indeed, is so full and so accurate as to leave lit- 

 tle room for doubt. But through the kindness of Professor "W. G. 

 Farlow of Harvard University, I have been able to examine an au- 

 thentic specimen, which had been presented to him by Professor 



* As the preceding communication was about to go to press, I received in- 

 formation that Tuomeya JiuviatUis had been found in anotlier locality in New 

 England. On April 3, 1890, Mr. A. P. D. Piguet of Jamaica Plain, Mass., 

 found specimens of it in the town of Sharon, about fifteen miles south from 

 Boston. This locality, the fourth in New England, is situated very nearly half- 

 way between those at Oxford and Bridgeport in Southwestern Connecticut and 

 the one at Mount Desert, Me. I was able, through the kindness of Mr. Piguet, 

 to examine this new locality. The Tuomeya was growing in some abundance 

 in a narrow, rocky brook, just below the dam of a small mill-pond. At the 

 place wliere the plants were growing the current was very rapid. On the 

 Bame stones with the Tuomeya were growing a large Batracfiospermum, proba- 

 bly B. Boryanum, Sirdt., and tufts of a small reddish Chantranaia, which seems 

 to agree with C. Ilermanni, Desv. In a few cases specimens of these plants 

 were growing on the specimens of Tuomeya. 



