Published in Transactions of the New Zealand Institute, in 1921, in volume 53, pages 346-350

Published in Transactions of the New Zealand Institute, in 1921, in volume 53, pages 337-342

Published in Transactions of the New Zealand Institute, in 1921, in volume 53, pages 195-196

Published in Transactionsand Proceedings of the New Zealand Institute, in 1921, in volume 53, pages 181-195

Published in Transactions of The New Zealand Institute, in 1921, in volume 53, pages 351-357

Published in Transactions of The New Zealand Institute, in 1921, in volume 53, pages 334-336

Published in Transactions of The New Zealand Institute, in 1921, in volume 53, pages 289-333

Published in Transactions of The New Zealand Institute, in 1921, in volume 53, pages 258-288

Published in Transactions of The New Zealand Institute, in 1921, in volume 53, pages 343-346

Published in Transactions of the New Zealand Institute, in 1921, in volume 53, pages 372-382