ANATOMY AND PH YSI0L03Y OF THE HORSE’S FOOT. 605 
Tig. 11. — Networks of terminal nerve-fibres from coronary cushion, close 
to the papillary surface ; highly magnified. 
communicating ramuscules of arteries, giving rise to frequent 
interlacings. This trunk continuing its course downwards, 
takes a position behind the artery, and then joining it to enter 
the groove, in the wings of the pedal bone (fig. 5, b), throws 
off twigs frequently to all the important parts in its vicinity. 
It enters the bone with the plantar artery, and, like it, dis- 
tributes itself in the most extensive manner, externally as 
well as internally forming meshes of radiating filaments 
which spread over the whole organ. This distribution, or 
arborisation, if we may so term it, is most noticeable in those 
parts of the foot which are more particularly destined to serve 
as the recipients of sensory impressions — as on the surface of 
the coronary cushion, and the membrane covering the sole of 
the pedal bone ; in these situations the fibres assume their 
most attenuated dimensions, the networks or ultimate plexuses 
appearing by the highest powers of the microscope to be com- 
