MARINE MISCELLANEA. 251 
distinct ramifications. The specimens from this place have evidently the structure 
of stalactites, which seem to have been formed in the sand.” The tubular character 
of some of the examples of these and similar stalactite-like concretions collected, and 
their attribution to the passage of calcareous or ferruginous solutions through the 
sand masses of which they are fundamentally composed is further referred to at pages 
621 and 622 of the same treatise. 
The photograph here reproduced depicts this peculiar strata under conditions more 
favourable for the illustration of its characteristic features than obtained at the epoch 
of its earlier observation. Sweer’s Island, when visited by the writer in 1891, had a 
few years previously been the scene of a violent hurricane. The low sandstone cliff that 
forms the subject of the accompanying. photograph, then taken, had been completely 
submerged and undermined by the abnormal waves, and was broken up into disrupted 
fragments that bore a by no means remote resemblance to masses of a Cyclopean 
growth of the Organ-pipe coral, Zubipora musica. 
W. Saville-Kent, Photo. 
STALACTITE-LIKE KOCK CONCRETIONS, SWEER’S ISLAND, GULF OF CARPENTARIA, NORTH QUBENSLAND. 
