264 Frederick Chapman : 



Moorabool Valley, give the details of the hill-section in this 

 locality as I'oHoavs : — 



"Basalt - - - - - 75 feet. 

 Incoherent sandy matei'ial with calcareous 



concretions - - - - OO ,, 



Yellow clay with calcareous concretions 5 ,, 



Polyzoal limestone - - - 25 ,, 



Orbitoidal limestone - - - 20 ,, 



Total - - - 175 feet." 



Tlie Dryden or Filter Quarries are situated on the right bank 

 of the Moorabool River, lower down than, and about three- 

 quarters of a mile in a direct line from, the stone quarry. They 

 are of much greater extent than the Moorabool Stone Quarry, 

 the deposit being worked on a large scale by P. McCann and 

 Sons, of Fyansford, for lime-burning, in the manufacture of 

 cement, and for filter blocks. The Filter Quarries extend along 

 the hill-side skirting the Moorabool, and present a section of 

 tolerably uniform appearance. The Dripstone, for filters, is 

 taken from the compact layers at the l)ase of the quarries ; the 

 beds vary from 12 inches to 3 feet in thickness. The lower 

 portion measured at one place gave 22 vertical feet of pure white 

 to cream-coloured frial)le limestone, composed largely of the same 

 foraminifera {Lepidocyclinae) as in the Moorabool stone, and 

 gradually passing upwards into polyzoal rock with fewer Lepido- 

 cyclinae. Over this were seen 14 feet of Hne-textured pale bluish 

 clay, which closely resembles the clay of the Waurn Ponds Quarry, 

 both as to lithological characters and microzoic contents. The 

 deepest part of the quarry, measured by the aneroid, was 80 

 feet to the river. 



The Moorabool Limestone is of a yellow or ochreous colour, 

 varying to a reddish brown. The rock of this, the Upper 

 Quarry, is fairly compact, and some portions could be selected 

 which would take a tolerably high polish, the included foramini- 

 feral shells adding to its ornamental appearance. More often, 

 Jiowever, the rock is slightly cavernous, but could still be used 

 for building purposes, for which it is eminently suitable, being 

 an even-textured freestone. Mr. W. 13. McC'ann, to whom I 



