38 Canadian Record of Science. 
spherical shape, the bending of the surrounding stratification 
being due to the crystallising force. All gradations of this 
process could be seen from the simple lenticular thickening 
of a particular layer to the development of a complete 
spherical “ bomb.” 
The results of the microscopic studies as given above 
would thus seem to give a satisfactory explanation of the at 
first sight so curious association of argillites, dolomites and 
cherts, and also furnish an interesting example of the con- 
siderable alteration of a series of rocks by chemical action 
alone unaccompanied by any of the more powerful forces 
usually resorted to in explanation of the metamorphism of 
rocks. 
SUPPLEMENTAL NOTES ON THE FLORA OF 
Cap-a-L’? AIGLE. 
By Roggerr Campss1t, M.A., D.D. 
In the Recorp oF Science, Vol. [V., No. 1, pp. 54-68, 
appeared a catalogue of the plants found up to that date, 
during the months of July and August, in successive years. 
The following species were discovered in the same district 
in the summer of 1891 :— 
EXOGENS. 
CARYOPHYLLACEA: 
Arenaria peploides, L., Port au Persil, near the shore. 
MALVACEA: | 
Malva crispa, L., in two places, apparently escaped from 
gardens. 
HYPERICACES : 
Hypericum ellipticum, Hook., on the banks of the Trou 
River. 
Hypericum canadense, L., near the Loutre River. 
LEGUMINOS#: 
Trifolium hybridum, L., near the River Port au Salmon. 
Trifolium agrarium, L., in the same locality as above. 
