THE VICTORIAN NATURALIST. 



127 



Gleichenia circinata 



Osmunda barbara 



Alsophila australis 



Dicksonia billardieri 



Davallia dubia 



Pteris aquilina 



P. iiicisa 



Lomaria discolor 



L. lanceolata 



L. fluviatilis 



L. capensis 



Blechnurn cartilagineum 



Asplenium bulbiferum 



A. umbrosum 



Aspidium aculeatum 



A. capense 



A. decompositura 



Polypodium ausirale 



P. grammitidis 



P. pustulatuni 



P. punctatum. 



Collected by Miss K. Cowle, 

 and identified by Mr. R. A. 

 Bastow : — 



HEPATICS. 



Trichocolea tomentella 



Lepidozia ulothrix 

 Symphyogyna flabellata 

 Marchantia polymorpha. 



MOSSES. 



Leucobryum candidum 

 Funaria hygromt;trica 

 Orthotrichum crispum 

 Hypnuni crinitum 

 Hypnodendron spininerviuni 

 Dawsonia superba 

 D. appressa 



Sphagnum cymbifolium 

 Cyathophorum pennatum 

 Biyum bimum 

 Ceratodon purpureas 

 Polytrichum angustatum 

 P. juniperurn 

 Atrichum ligulatum 

 Dicranum setosum 

 Hookeria nigella 

 Blindia acuta. 



LICHENS. 



Parmelia conspersa 

 P. perforata 

 P. tenuirima 

 Usnea barbata 

 Cladonia aggregata. 



Geology. — The petrology of the districts visited on this excur- 

 sion is of much interest, and the rocks would repay the work of a 

 detailed study. Although some of the types of rocks met with are 

 similar to the Macedon rocks described by Professor Gregory, 

 there are others which seem to be peculiar to this locality, or, at 

 any rate, different from the Macedon type. The geologists of 

 the party collected specimens of Dacite from the Don River 

 valley, near the junction of the intrusive rocks with the Silurian. 

 Some of these exhibited weathering in a striking manner, large 

 boulder-like masses peeling at their angles, reminding one of the 

 spheroidal weathering of some finer-grained granites; this resulted 

 in the formation of large residual spheroids of the rock, often 3 or 

 4 feet in diameter. The occasional fracture of these boulders 

 revealed a rudely radial structure in the interior of the mass. 

 The granulitic diorites were occasionally found weathered in 

 concentric coats seen on striking off the corners of the exposed 

 rocks. This was especially the case with a mica diorite found 

 here. Some of the rocks higher up the mountain are presumably 

 rich in titaniferous iron, for the runnels at the sides of the track 

 were filled with the black glittering material, an almost pure menac- 



