170 THE CANADIAN NATURALIST. [June 



§ 42. Of the waters of the second class whose analyses are here 

 given, the first three occur, with many others of similar 

 character, on the south side of the Ottawa river, below the city of 

 that name. The remaining four are on the north side of the 

 St. Lawrence, between Montreal and Quebec, where also similar 

 waters abound. All of these springs rise from the Lower Silurian 

 limestones of the region. 



1,2. These two waters are from the township of Plantagenet. The 

 first is known as Larocque's, and the second as the Georgian spring. 

 These waters were examined in 1849 and 1851. Two other 

 springs have been observed in the same vicinity, one resembling 

 Larocque's spring and containing borates, with a notable pro- 

 portion of strontia, while the other is an alkaline-saline water of 

 the third class. 



3. Caledonia Intermittent Spring. This spring owes its name 

 to the intermitting discharge of carburetted hydrogen which takes 

 place from its waters. It is in the township of Caledonia, not far 

 from Plantagenet, and near three other waters from the same 

 township, to be mentioned in the next class. The water was 

 collected in September 1847. 



4. Lanoraie. This is from the seigniory of Lanoraie. It 

 contains both baryta and strontia, and evolves an abundance of 

 carburetted hydrogen. The water was collected in March 1851. 



5. Is from a copious spring in the seigniory of Berthier, and was 

 collected in July 1853. 



6. Is from the township of Caxton, and yields six or eight gal- 

 lons of water a minute, besides a great abundance of inflammable 

 gas. The carbonic acid was found to equal 1.126 parts, of which 

 .651, or more than one half is required for the neutral carbonates 

 present. The water was taken from the spring in October 1848. 



7. Is from the seigniory of St. Leon, and is a copious spring 

 which, like the last, disengages inflammable gas. The carbonic 

 acid was equal to 1.224 parts, of which .651, or not quite one half 

 is required for the neutral carbonates found by analysis. The water 

 was collected in October 1848. 



8. 9. These are from two springs in the parish of Ste. 

 Genevieve on the Batiscan River, and are remarkable for the large 

 proportion of iodids which they contain. The first is known as 

 Trudel's spring, and the second is at the ferry opposite to the 

 church. The waters were collected in August 1853. Several 

 other saline springs occur in the same neighborhood. 



