Vol. XXXIV., Plate XL. 



Photo, by W. Hoiochin. 



Upper figure. — An erratic of black quartz showing glacial polish, facets, and 

 striae. Obtained in situ in the quarry near the Square Waterhole, figured in 

 Plate xxxviii. Half natural size. 



Lower figure. — Glaciated erratic of fine-grained schist, found in situ in road- 

 cutting of glacial till west of Strathalbyn. (See Plate xxxix.) The stone is 

 faceted at diverse angles and strongly scored with striae. Two-thirds natural size. 



Hussey & Gillingham. Printers. Adelaide. 



