Ontario Coast, Fairhaven and Sodus Bays. — Martin. 333 
My first visit to this coast was in the spring. At this time, 
owing to thawing and to the great quantities of water in the 
drumlin till large masses of clay were constantly sliding down 
to the waves. As a consequence of this rapid supply the 
beaches in front of the cuts had large numbers of the charac- 
teristic angular and striated pebbles so abundant in drumlin 
till. A visit three weeks later to the same point showed very 
few angular pebbles and these few had evidently just fallen 
down. In the short period of three weeks, then, the hard 
Medina sandstone pebbles had been so worn down as to have 
lost all traces of their angularity. 
The ponds and lagoons in the rear of the beaches receix'e 
the whole of the land drainage and consequently the sediment 
which the streams are bringing down. The sediment is depos- 
ited in the ponds while the water flows into the lake, either by 
filtering through the porous gravel beaches, or, as in the case 
of "The Pond" (see map), by keeping for itself an open pas- 
sage through the beach. Sediment and abundant aquatic veg- 
etation are rapidly filling these ponds and in some cases have 
completed their task. 
By a reconstruction of the truncate drumlins (see map), 
one can see that there has been a retreat of the ofT-shore 
beaches and drumlins of from a fourth to half a mile. As to 
how much farther north these drumlins extended we have no 
certain data ; but the presence of several boulder pavements at 
a considerable distance off shore, having the basal outline of 
drumlins, seems to indicate, the former, positions of drumlins 
which have been completely cut away. These boulder pave- 
ments are of very large boulders, such as the waves would have 
been unable to remove. Just such boulders arc now to be seen 
off the northern ends of the existing truncated drumlins. 
We have -in the formation of the above described inter- 
drumlin beaches a striking illustration of the power of waves 
as a transporting agent and proof of their importance in shore 
phenomena. Professor Tarr, in a paper on "Wave Formed 
Cuspate Forelands,"* callfe attention to the importance of wave 
transportation as a cause for many cuspate forelands ; and 
since waves seem to me the most important along-shore agents, 
I have made some observations which show in a definite man- 
American Geologist, vol. xxii, 1898, p. 1. 
