J^""g'] Excursion to Lake Corangamite and District. 23 



while closer in more species of Rotifera occurred. Among the 

 Rotifera was the well-known species Triarthra longiseta ; an 

 Anuraea frequently observed from other localities but probably 

 unnamed ; a Brachionus (unidentifiable) was also in plenty. 

 It will be difficult to say whether this latter form is new, as 

 this genus comprises many species, which in some cases are 

 very variable. This form, however, was quite unknown to 

 any of the party. A very interesting and pleasant morning 

 was spent here. In the afternoon a journey was made to the 

 well-known Stony Rises, of which much has been said in the 

 past that need not be repeated now.* One of the "aims was to 

 find out the means of access to Lake Corangamite at some 

 point where a boat was available. In the Rises it was dis- 

 appointing to find all the hollows dry ; evidently the summer 

 had been drier in this district than about Melbourne. A chance 

 meeting with a resident gave information of a good road to 

 Corangamite, and, pursuing it, a point was reached on the 

 southern shore (A on map). This lake is given in the " Victorian 

 Year-Book " as covering an area of 90 square miles, and is of 

 very indented outline, about 18 miles long by 6 miles wide. At 

 this position the shore is a basaltic floor sloping very gradually 

 into the water. The soil covering the basalt is washed away, 

 but deposits of rather fine sand occur in the hollows. The 

 univalve shell Cociella striatula occurs, and there are consider- 

 able accumulations here and there. As only stick-nets could 

 be used, wading was resorted to in order to get out as far as 

 possible. Examination on the spot of the gathering revealed 

 the presence of a very interesting rotifer, a species of Pedalion, 

 occurring in great numbers. Returning to Colac, the party 

 was added to by the arrival of Mr. Searle, and a very inter- 

 esting evening was spent examining the material obtained by 

 means of the microscopes the party was provided with. On 

 Saturday, as no information had come to hand regarding a 

 boat on Lake Corangamite, it was determined to visit Coragulac 

 Hill and the adjacent hill known as the " Red Rock." This has 

 been made a picnic resort, and the shire council has provided 

 facilities for visitors in the shape of roads, paths, water supply, 

 and on the summit of Coragulac, 768 feet above sea-level, a cast- 

 iron dial giving the direction and distances of the land-marks all 

 round the horizon. The view here is scenically very fine and of 

 great interest, as affording a view of the distribution of the 

 lake system. Corangamite extends to the very limit of the 

 horizon, while close below is Coragulac, covering 90 acres. 

 There are also surrounding the eminence Lakes Werowra, 

 Purdiguluc, Gnalinegurk, two known as the " Twin Lakes," 



* Searle and Shephard, "Visit to the Lakes near Camperdown and 

 Colac," Vict. Nat., October, 191 5 (vol. xxxii., p. 87). 



