2 6o ANNALS OF SCOTTISH NATURAL HISTORY 



in not having attempted to show specific features. In other words, 

 they have been careful to avoid showing what are, strictly speaking, 

 results to accrue from investigation, whether past or future, while 

 giving the physical features which regulate those results. A brief 

 statement of what is done will be useful. Carefully and appropriately 

 selected colours show us at a glance the cultivated lands (pale green), 

 the patches of woodland (deep green), the moorlands, hill pastures, 

 and other uncultivated lands (purplish-pink, heather-colour), and 

 deer-forests (bluish patches on the heather tracts). Blue is used to 

 colour the freshwater lochs and rivers as far up as it is possible to 

 have sport with salmon and sea-trout : this is the nearest approach 

 to giving distribution that is attempted, but essentially all that is 

 done is to show the inland waters which migratory fish are capable of 

 passing up without physical impediment. 



Levels are shown by shading ; the lines being taken at iooo and 

 2000 feet. We might suggest, however, that it would have been 

 preferable to show H. C. Watson's divisions at 900 and 1800 feet 

 instead, and so have fitted in with botanical and conchological 

 investigations. The iooo's are merely arbitrary; the 900's are based 

 on climatological considerations. Red bounder-lines, which are 

 really the water-shed lines (or, as Mr. Harvie-Brown puts it, sky-lines) 

 showing the drainage areas or river-basins, are given, and it will be 

 a source of gratification to Dr. Buchanan White to see that the 

 faunal divisions he proposed so long ago as 1873 st i u n °lcl good, 

 and seem to be universally accepted. 



The requirements of marine zoologists are also well catered for. 

 The varying depths of the sea are distinguished by shades of blue at 

 intervals of every ten fathoms ; and the area between high and low 

 tide is coloured yellow. The principal (why not all ?) lighthouses 

 are marked by prominent red stars ; and a useful feature is given by 

 a dotted blue line to show the limits within which beam-trawl-fishin°; 

 is prohibited. The scale of the map is 1 o miles to the inch ; and it 

 is exceptionally clearly printed ; for, notwithstanding the extent and 

 variety of information shown, the place-names can be easily read 

 everywhere, and the physical features readily made out. 



The map is accompanied by four pages of explanatory notes, 

 setting forth the leading principles which have actuated the authors; 

 but these are not as clearly and intelligibly set forth as we could 

 like : in fact, we are totally unable to discover what is meant by the 

 words "the first of these" and "the latter" used at p. 3 in reference 

 to cultivated and uncultivated lands. 



Taken altogether, this map will be found most useful ; and, so 

 far as we can judge, not being on the field, it is extremely well done. 

 It would be difficult to find authors more capable of dealing with 

 such a task ; and they are to be congratulated on a good piece of 

 work well done. — W. D. R. 



