CONTENTS. 



PAGE. 



Introductory ... ... .... ... 7 



Work of Horticultural Board 



NEED OP REMEDY FOE BED SCALE ... ... 8 



RESOLUTION OP THE BOARD ... ... ... 8 



PREVIOUS USE OP FUMIGATION IN CAPE COLONY ... 9 



PREPARATIONS POR THE WORK ... ... ... 9 



REVIEW OF OPERATIONS ... ... ... 10 



CHARGES POR TREATMENT ... ... ... 11 



OBJECT OP THIS REPORT ... ... ... 12 



ACKNOWLEDGMENTS ... ... ... 12 



The Outfit 



THE TENTS ... ... ... ... 13 



THE SHEETS ... ... ... ... 14 



OILING OF THE CLOTH ... ... ... 14 



UPRIGHTS FOR RAISING THE SHEETS ... ... 16 



OTHER NECESSARIES ... ... ... 16 



Details of Treatment 



GENERATION OP THE G-AS ... ... ... 17 



TIME NECESSARY FOR THE TREATMENT ... ... 17- 



ABSENCE OF SUN-LIGHT NECESSARY ... ... 17 



SEASON FOR FUMIGATING ... ... ... 18 



INJURIES TO THE TREE ... ... ... 18 



EFFICACY OF THE GAS ... ... ... 19 



QUANTITIES OP CHEMICALS ... ... ... 20 



Cost of the Equipment and Chemicals 



EQUIPMENT ... ... ... ... 23 



CHEMICALS ... ... ... ... 24 



EXPENSE COMPARED TO SPRAYING ... ... 24 



Nature of Hydrocyanic Acid ... ... ... 25 



General Applicability of Fumigation in the Colony ... 27 



Points to Remember 29 



