CONTENTS. 



Pagk 



The Internal Combustion Engine as a Factor in 

 National Progress (Presidential Address) — 

 P. L. Weston, B. Sc, B.E., 26th March, 1913 . . vi 



/ On an Easy and Certain Method of Hatching 

 Ceratodus Ova — Thos. L. Bancroft, M.B., 29th 

 April, 1913 1 



The Geographical Distribution of Queensland 

 Gasteropoda — John Shirley, D.Sc, F.3I.S., 

 27th June, 1913 5 



Notes on the Cyanogenetic Glucoside of Eremo- 

 PHILA Maculata — Frank Smith, B.Sc, F.I.C., 

 26th August, 1913 13 



The Plants of Mast-Head Island — H. A. Longman, 



27th June, 1913 17 



Underground Waters (I.) — Thomas Parker, F.G.S., 



27th May, 1913 25 



Underground Waters (II.) — Thomas Parker, F.G.S., 



26th August, 1913 31 



