This was explained in (Hotine 1931, p. 12) and better still ...
Of all the official documents that have been presented to the Legislative Council this session, by far the most interesting is the "Report of the Natal Forests" by Mr. H. G. Fourcade of the Cape Service, who was appointed early last year to perform the work of which this report is the representation and the result .... No one who reads this report will or can doubt his complete competency for the task committed to him. He has produced a monograph of immediate utility, absorbing interest, of abiding value. We have read the 95 pages of the report with unflagging attention, and benefit; and that is more than might be said of most Blue-books. These pages are pregnant with instructive and suggestive matter that it is impossible to take more than a cursory survey of them in this column. To be appreciated and understood, as it deserves to be, the whole report must be read.
— (Storrar 1990, p. 38), quoting from the leading article of the Natal Mercury, 27 May 1890.