Published in Gardens' Bulletin, Straits Settlements, in 1934, in volume 7, issue 3, pages 191-316

Published in Gardens' Bulletin, Straits Settlements, in 1934, in volume 7, issue 3, pages 317-324

Published in Gardens' Bulletin, Straits Settlements, in 1934, in volume 8, issue 1, pages 1-36

Published in Gardens' Bulletin, Straits Settlements, in 1934, in volume 8, issue 1, pages 41-58

Published in Gardens' Bulletin, Straits Settlements, in 1934, in volume 8, issue 1, pages 63-68