HEIGHTS AND DISTANCES. 67 



f e distaunce. fat es to say f e space fro f ethen to 

 f e erthe by 12 and departe fat comes f ereof by 

 f e nonmbre of f e vmbre of f e poyntes froward 

 rafer had. and f e nonmbre howe ofte it be es f e 

 quantite of f e length of fat playne. Parcas f e 

 playne whose length you wolde mesure es noght 

 evene nor even distondyng to fin orisont. fat es to 

 say to f e ende of fin sight, bot fat playne es lift 

 vp and croked. fan biholde f e crokidnes f ereof 

 by f e holynge. fat es to say fe eyghne of f e 

 quadrant, whilk fus you schalt do. set vpright 

 tuo jerdes of one length in f e endes of f e playne 

 to be mesurede. fan biholde f e toppes of f ise 

 thynges by bothe f e eyghne of f e quadrant, fan 

 loke howe fele poyntes fe perpendicle kyttes. 

 and fat of f e vmbre froward. if parcas f e perpen- 

 dicle falle vpon fe poyntes of f e vmbre toward, 

 fan torne fern into f e poyntes of f e vmbre fro- 

 ward. fan kepe f ise poyntes. Est se f e ende of 

 fat playne by bothe fe eyghen of fe quadrant, 

 and loke howe fele poyntes of f e vmbre froward 

 f e perpendicle kyttes. fan set f ese poyntes to f e 

 poyntes rafer kept, if you stonde in a lowere 

 place aftere fan you did bifore. and if you stonde 

 in an heighere. fan take away f e poyntes rafer 

 kept, fan do with f ise poyntes as you did with f e 

 poyntes in f e next Chapitere bifore in mesuryng 

 of an evene playne. fat es to say multeply f e dis- 

 taunce fro f ethen to f e erthe by 12 and depart fat 

 comes f ereof by f e poyntes of f e vmbre fro- 

 ward. and fe nonmbre howe ofte it be es fe 



