438 



NATURAL SCIENCE. 



Dec, 



Fig. I. — The specimen of Arcluiopteryx in the British Museum. About \ natural 

 size. Explanation of letters: — 7, 2, portions of wing-digits, with claws; cr, metacar- 

 pals; u, ii', ulna ; v, r', radius ; ft, h' , humerus; sc, scapula; fu, furculum ; c, ribs 

 partly sternal) ; /, feathers ; /, innominate bone ; a, acetabulum of the same ; /, /', 

 femur ; t, t', tibia ; vit, metatarsus ; /, phalanges ; b, supposed cast of brain. 

 The block kindly lent by Dr. H. Woodward, F.R.S. 



