6 



microscopk; foums in fkesh watkk. 



road, in a black swamp, riuis about one mile, and empties into 

 tbe Miramichi River near the post office. 



In it were found almost all the common species, and also 

 many that were found nowhere else, so that anyone here wish- 

 ing to study Desmids can find no source at all equal to it for 

 variety of forms. 



The water plants and Algte are not taken up in this paper, as 

 it is absolutely necessary to make a protracted study of their 

 modes of propagation and conjugation to be at all sure of the 

 species, and consequently they are reserved for a future paper. 



The nomenclature is principally that of Wolle, and the follow- 

 ing forms are all that so far have been noted in this immediate 

 vicinitv : 



DESMIDS. 



Arthrodesmus octocornis. 



Bambusina Brebisonii. 



Closteriuni acuminatpuni. 



" acerostTiii. 



" Dianse. 



' ' lineatiim. 



" Venus. 



" parviilum. 



" lanceolatum. 



" strigosmn. 



" juncidum. 



" acutiim. 



' ' gracile. 



" luacilentunL 



" didymotitum. 



" decussacum. 



•' nasutum. 



" lunula. 



Cosmariuni b3trytis. 



" perforatum. 



" circnlare. 



" contractum. 



" homalodermum. 



De Baryi. 

 " ovale. 



Calocylindrus pseudoconnatus. 

 Desmidium Swartzii. 

 Docidium crenulatum. 

 rectum. 

 " bacculum. 

 " Archerii. 

 Etiastruni urna forme. 

 ' ' liumerosum . 

 " verucosum. 

 " " var. elatum. 



" ansatum. 

 pinnatum. 



var. striatum. Hyalotheca dissilliens. 



Cosmarium 



costatum. 



decorum. 



subtile. 



subcostatum. 

 Ralfsii. 



margaritif erum . 

 pyramidatum. 

 Brebisonii. 

 lieve. 



dubia. 

 Micrasterias rotata. 

 ' • radiosa. 



" Americana. 



" brachyptera. 



" npiculata. 



Mesotsenium Braunii. 

 Penium Brebisonii. 



interuptum. 



