22 LAKE FITZGERALD, ST. JOHN, N. B. 



19th Annual Report of the Geological Survey (U. S.) 1899, 

 the value of infusorial earth, referring there particularly to 

 that of Virginia, is stated to "vary from $6.50 to $20.00 a ton." 



Here, then, we have a deposit of about 20,000,000 cubic fe^t, 

 which at 15 lbs. per c. foot would amount to 150,000 tons; and 

 that would, even at the lowest figure, if sufficient market could 

 be found, net the owner a fortune. 



There is said to be another such deposit near Amherst, Nova 

 Scotia. 



These dejiosits, found at the bottom of old glacial lakes, are 

 formed by the piling up during ages of the shells of diatoms 

 that have lived and died in the waters, and are found through- 

 out the Northern States and Canada. 



The forms in this case were considerably broken, showing 

 them to be probably old. There are many Trachelomonas 

 scattered through the deposit; a form allied to the Euglenidse 

 but having a siliceous covering, which, consequently, has been 

 preserved. 



The following are some of the most prominent forms in the 

 deposit : 



Navicula viridis Kutz. 



'' nobilis Ehr. 



" gigas Kidz. 



" brebisonii " 



" dactylus " 

 Cocconema parvum. 

 Cymbella cuspidata. 



Cymbella (Encyonema) gracile Rah. 



" cistula Hep. 



Epithemia zebra Kutz. 



Gromphonema acuminata, var. coronata, Ehr. 



Eunotia monodon " 



" " var. depressa " 



" major Rab. 



Surrirella Splendida Ehr. 



Stauroneus pheneocenteron " 



Navicula iridis sev. var. " 



'• elliptica Kutz. 



" Semen 



" rotseana, var. oblongella, an Alpine form. 



