REVIEWS. 
453 
the coffin bone, between the two wings. Its upper surface is continuous 
with the articulatory surface of the coffin bone. Its lower surface rests on 
the perforans flexor tendon : which tendon also rests upon the insensible 
frog ; which again has the sensible frog and the tough and flexible horn of 
the external frog on its lower side. Its motion is downward ; and in this 
direction it would appear to be amply protected. By its upper surface it 
helps to sustain the vast weight of the animal ; yet, between it and the 
coronet bone there is only synovia to break the force. Nor does it require 
anything more ; however much to the contrary it may appear to the inex- 
perienced reader ; for to the force from above it is yielding. The upper 
surface of the bone is never injured ; but the lower surface driven further 
downward whenever the coronet bone travels backward, — the inferior sur- 
face though, as it would seem, amply protected by the synovial capsule ; by 
the perforans tendon ; by the sensible frog ; by the insensible frog ; and by 
the tough horny frog, — is the situation of one of the most terrible and fatal 
scourges that horse-flesh is heir to, viz., navicular disease ; because, in this 
direction, the bone is propelled against and bruised by any inequality of the 
ground.” 
Blaine follows up his “ Osteology 5 ’ with what he calls 
“ Syndesmology,” or a description of the connecting parts 
or Appendages of Bones/ and then proceeds to c Myology,’ 
or account of the muscle or flesh of the body; giving, first, a 
general account of muscle and of tendon, and then proceeding 
to a description of individual or particular muscles, confining 
his observations, under this head, to some remarks on the 
existing anatomical nomenclators ; after which he quits the 
subject, to resume it, however, (after the consideration of the 
headings of Bursalogy, Angiology, Neurology, Adenology, 
and the Reproductive System), longo intervallo, at page 251, 
under the title of “ The Structural and Physiological Display 
of the Extremities/’ commencing with the “ Anterior Ex- 
tremity/ 5 under which he includes the “ Muscles of the 
Shoulder/ 5 “Muscles of the Humerus, or Arm,’ 5 “Muscles 
of the Fore-arm,” “ Muscles of the Cannon/ 5 and “ Muscles 
of the Pastern and Foot/ 5 followed by “Ligamentous Con- 
nections of the Anterior Extremity/ 5 and a similar cursory 
account of the “ Anatomy and Physiology of the Posterior 
Extremity. 55 
MaheW, on the other hand, has succeeded his description 
of the bones, by one of the “Appendages to Bone/ 5 viz., of car- 
tilages, periosteum, medulla, lig aments, and synovia; and has then, 
as is the more common route on such occasions, proceeded at 
once to a description of the muscles of the horse, from a 
