•APPEKDIX — SUMMER CAMP AT LEPREAU BASIN. 93 



sheltered spots on the shores of Acadia, and traces of which 

 have been found on the St. Croix River. But although some 

 search was made no trace of them was found. Lepreau Basin 

 itself is disappointing, for it is rather barren of any forms except 

 the economic clam ; at all events this is true of mollusca and 

 echinoderms, the two test-groups of our fauna. Star-fishes and 

 even sea-urchins occur there hardly at all ; a fact due, no doubt, 

 to the long time the basin is empty at each tide and consequent 

 warming of water in the pools. Much was expected also from 

 the excursion to Point Lepreau itself, but the tides were neap 

 and on our arrival an hour flood. But enough was seen in the 

 tide-pools to show that this is a most promising locality, and it 

 is earnestly commended to the attention of those members of the 

 Society who may have opportunity to visit it. Mace's Ledges 

 were also found extremely barren of animal life, and the forms 

 found were of the commonest. 



Visits were made to Clear Lake, a remarkable basin not much 

 more than a quarter of a mile long, and without inlet. Locally 

 reputed to be bottomless, an extreme depth of seventy-eight feet 

 was found, after thorough soundings; but this is a great depth 

 for so small a lake. On both sides of the lake are ledges belong- 

 ing to the Dadoxylon sandstone, and the lake seems to occupy 

 a gorge in them. Interesting water plants grow in the lake, 

 including Eriocaidon septangulare, growing at a depth of nine 

 feet. There are interesting biological problems connected Avith 

 this plant, particularly as to how it obtains the oxygen needed in 

 the development of its enormously long flower stalks. 



The camping party spent about ten days at Lepreau Basin. 

 The instructors were Professors W. F. Ganong and L. W. Bailey, 

 Principal G. U. Hay and Dr. G. F. Matthew. Lectures were given 

 in the evening on zoology, botany and geology, with excursions 

 and class-work during the day. — W. F. G. 



