Number 1
Boughton, W.C. Planning the development of water resources (pages 1-13)
Hayward J.A.; Sutherland A.J. The Torlesse Stream vortex-tube sediment trap (pages 41-53)
Dreaver, K.R.; Hutchinson, P. Random and systematic errors in precipitation at an exposed site (pages 54-63)
Number 2
Hunt, B.W.; Wilson, D.D. Graphical calculation of aquifer transmissivities in Northern Canterbury, New Zealand (pages 66-80)
Stratford, R.P; Costello, E.J. Solar heating to prevent freezing in recording raingauges (pages 139-141)