THE VICTORIAN NATURALIST. 157 



quently almost glabrous), produced into hyaline lobes 

 or entire. Palea of various lengths. 

 Ligule without cilice, or rarely ciliated. 



Stipa dichelachne (Dichelachne crinita), S. micrantha (D. 

 sciurea), S. elegantissima, S. tuckeri, S. verticillata, S. streptachne 

 (Streptachne stipoides). 



2. Flowering glume silky-hairy, the margins at the end more or 



less produced into hyaline lobes or entire. Palea 

 nearly or quite as long as the glume. 

 Ligule without cilice. 



Stipa flavescens, S. teretifolia, S. muelleri, S. compressa, S. 

 drummondii, S. pycnostachya, S. acrociliata, S. setacea, S. mac- 

 alpinei. 



3. Flowering glume silky-hairy, the margins entire or rarely pro- 



duced into lobes. 

 Ligule ciliated. 



S. semibarbata, S. hemipogon, S. pubescens, S. eremophila, 

 S. aristiglumis, S. luehmannii, S. eriopus, S. trichophylla, S. scabra 

 (Streptachne crinita). 



NOTES ON A VISIT TO TOWER HILL, KOROIT. 



By T. S. Hart, M.A., 



Lecturer on Geology, School of Mines, Ballarat. 



{Read before the Field Naturalists' Club of Victoria, 10th Sept., 1900.) 



Tower Hill lake and island are situated to the south of the 

 township of Koroit, about midway between Warrnambool and 

 Port Fairy, and 176 miles by rail from Melbourne. 



The island and lake are well known as the central cone and 

 larger crater basin of one of the most distinct of the numerous 

 extinct volcanoes of Western Victoria. Some time ago (February, 

 1894) I visited this locality. As I know of no available descrip- 

 tion, I thought it might be well to present some notes on this 

 hill for comparison with the occurrences noted at another locality 

 to be described. 



The surrounding country rises at a gentle slope to the edge of 

 the cliff surrounding the lake. Round the lake clear sections do 

 not usually occur, detritus from the upper parts covering the 

 slopes. The base of the cliff is often seen to consist of a lime- 

 stone of Lower Tertiary age, containing fossil casts at places. 

 Along the west side it is at one place seen continuously for about 

 three-quarters of a mile, but usually is only seen at intervals, 

 though sufficiently frequently to suggest that it probably forms 

 the base of the greater part of the cliff, though covered by 



