GEOGRAPHICAL INDEX. 
EXPLANATORY NOTE. 
British Guiana comprises' an area of territory lying approximately 
within eight degrees of latitude (1° — 9° N.) and live degrees of 
longitude (57° — 02° AY.). In the accompanying sketch-iuap, the inter- 
latitudinal spaces of country are designated by the capital alphabetical 
letters A B C H, and the interlongitudinal portions by their 
corresponding italic ones a b c /. Hence, any portion of the land 
under consideration can be described through the combination of any 
two of such letters: thus, the spots marked by a cross (x) and by a 
nought (o) can be more or less accurately located as Db and Ge. 
