Book V. 



MAPPING ESTATES. 



489 



31 12. In the third, a vertical profile, ot geometrical bird's-eye view, that is, a bird's- 

 eye view in which all the objects are laid down to a scale, is presented. In this the upper 

 surface of every object is seen exactly as it would appear to an eye considerably elevated 

 above it, and looking centrically down on it. (Jig. 427. ) This mode, properly executed, 

 is calculated to give a more accurate idea of the furniture or surface -objects of an estate 

 than any other ; and if the declivities be correctly indicated, and the shade of the hollows 

 and eminences to be laid on with reference to some medium elevation, referred to or illus- 

 trated by sections, taken in the direction of indicated lines (a...b), it will give an equally 

 correct idea of the variations of the ground. In short, it is the best mode for most pur- 

 poses, and is now coming into general use. 



3113. ^ very complete method of giving the plan of an estate, is to adopt the profile 

 manner and include such a portion of the plans of the adjoining estates or country as 

 shall be cent lined within a circle of moderate extent [Jig. 428.), the centre of which may 



428 



be the centre of the demesne-lands, family-mansion, or prospect-tower. Around a map 

 so formed, the distant scenery, as seen from the roof of the house, or prospect-tower, may 

 form a panoramic circumference, or margin of prospects. (Jig. 428.) In all these modes, 

 dimensions and contents are given or obtainable along with effect; in all those which fol- 

 low, effect or general appearance only is obtained. 



3114. The natural bird's-eye view is intended to give a general idea of the external ap- 

 pearance of an estate. In this the eye of the spectator is supposed to be considerably 

 elevated above the centre of the estate, and all the objects are portrayed exactly as they 

 would appear to him in that situation ; largest in the centre, and gradually diminishing to 

 the circumference of the circle of vision. In such a delineation, parts of other adjoining 

 estates may often require to be included, in order to complete ^e circle ; but these arc 

 necessary to the general idea, and can easily be distinguished from the principal property 

 by minute marks on the delineation. 



3115. In the panoramic view, the delineator supposes himself placed on an eminence, 

 as the roof of the mansion, wbere centrical, and looking round on all tliat he sees on 

 every side. Where there is a prominent hill, or where the mansion is on an eminence, 

 this is a very desirable mode of giving a general idea of a domain, and by the aid of hori- 



