By the same Author. 



ON THE ARCHETYPE AND HOMOLOGIES OF THE VER- 

 TEBRATE SKELETON. Svo. 1848. 



Two Folding Plates and Twenty-eight Woodcuts. Price 1 Os. 



ON THE NATURE OF LIMBS. Svo. 1849. 

 Three Plates and Eleven Woodcuts. Price 6s. 



