438 Prof. Carl Vogt on 
affirmed, the right tibia showing it by its outer, and the left 
by its inner surface. 
The fore limb (fig. 1), bearing the wing-feathers, is un- 
doubtedly the most interesting. The two wings are flatly 
Fig. 1. 
we 
¢ a 3 
Fore-limb of Archeopteryx, from above. Half the natural size. 
extended in the position of flight, the joints twisted so that 
the ulnar side, to which the remiges are attached, is turned 
backward. The two limbs composing the shoulder-girdle 
present their dorsal aspect ; the body has come away from the 
girdle and is turned backward with the head and neck. ‘Thus 
the hollow inner surface of the shoulder-girdle, that which is 
presented to the intestines, is seen. 
Tadmit that I have had much trouble in clearing up the 
structure of the shoulder-girdle, and I am not sure that I 
have guessed right. 
In our example there is seen only a median plate, slightly 
concave, 7 mm. long and 12 mm. wide, which looks a little 
like the throat-piece that soldiers formerly wore. This plate 
is split exactly im the middle, and I believe that this fissure 
isasymphysis; but I am not sure, for asimilar split, evidently 
the result of a fracture, is observable in the right half of the 
bone. 
Two long bones, a little twisted, and projecting very much, 
directed backwards and upwards, are attached laterally to the 
sides of this median plate. ‘They have been somewhat injured 
by the splitting of the slab; but if they were brought into 
their normal position opposite the trunk they would lie longi- 
tudinally above the ribs, parallel to the vertebral column. 
