The inclusion of information of the sort is, however, quite essential, as it is by no means easily accessible, and, as a matter of fact, scarcely exists, except in the form of the official records of the various meteorological observatories, so that when collecting data for the compilation of this second part, or appendix, on tropical climates, the writer was a good deal surprised to find that he was engaged in the preparation of what is really a pioneer work on the subject in the English language.
This being the case, it has been thought well to publish these outlines of tropical climatology also in a separate form for the use of the professional reader who may not care to be burdened with a booklet on health treated from the popular point of view; a step which has further necessitated that the paging and indexing of the two parts should be kept separate from each other, a plan which, in view of the moderate dimensions of the book, might otherwise have appeared rather superfluous.
LIST OF DRUGS, &c., MENTIONED IN THE TEXT.
Bicarbonate of soda.
Bismuthi salicyl., in tabuloids of grains x. each.
Book of litmus paper.
Boracic acid, in powder.
Calomel, in tabuloids of 1⁄2 grain each.
Carbolic acid, with sufficient glycerine added to keep it in a fluid condition.