. Shore Development i/i the Bras if Or Lakes. — Wooihnan. 341 
Whycocomagh bay, have filled the head of the bay for some 
distance, and make a delta well supplied with distributaries. 
Other streams show a slight beginning of this growth, but 
none have progressed far. 
Deltas: — The only delta which pushes out into the open 
water is that of Middle river, Indian bay, on the north side of 
St. Patrick channel. It is quite strong, and would be minutely 
lobate, did not the waves plane its front off straight. It has 
pushed its way outward for some distance, however, and its 
three or four distributar}- channels attest the strength of the 
river current. 
Spits. — There are many good spits, and a number other 
than those already mentioned under various heads. One of 
the best and most complex is Goulet beach, Lennox Passage. 
Another is Barrachois hook. Others are the south point of 
Indian id., Whycocomagh bay ; south end of Wilson id., near 
Campbell cove. Great Bras d'Or ; many instances in West bay 
and the mouth of Denys Basin ; and Crow point, east end of 
St. Patrick channel — a complex case for one so small. Some 
of the best, for size and curve, are the bars outside of Amag- 
dores and Christmas ponds, and Lochmore, all in East bay. 
Perhaps, also, the bars of Christmas island in Little Bras d'Or 
near Barra strait should belong in part to this group as well as 
to that of bay bars. 
The objects in writing this paper have been three: — the 
proof of wave agency as the chief factor in the development of 
forelands in the Bras d'Or lakes, which could only be in addi- 
tion to what Prof. Tarr has written ; the description of a some- 
what new form of cusp, if we accept Dr. Gulliver's admirable 
classification ; and the enumeration of some of the forelands 
found in the lakes, chiefly to show that almost all the varieties 
given in that classification have representatives here, in abun- 
dance and in good form. The last brings out two points — the 
great richness of the field for the study of constructive shore 
features, and the fact that almost all the kinds of forms now 
recognized can be explained — must be explained here — with- 
out invoking the aid of currents. Some varieties of forelands 
are demonstrably current-formed ; others are perhaps partly 
formed thus, or have their inception in currents and their main 
