II. THE SWALLOW. 85 



A separate (pulled off, so that they can be 

 set side by side), B shut up close in the 

 folded wing, C, opened in the spread wing. 



']6. And now, if 3-ou will yourselves watch 

 a few "Birds in flight, or opening and closing 

 their wings to prune them, you will soon 

 know as much as is needful for our art 

 purposes ; and, which is far more desirable, 

 feel how very little we know, to any purpose, 

 of even the familiar creatures that are our 

 companions. 



Even what we have seen to-day * is more 

 than appears to have been noticed by the 

 most careful painters of the great schools ; 

 and you will continually fancy that I am in- 

 consistent with myself in pressing you to 

 learn, better than they, the anatomy of birds, 

 while I violently and constantly urge you to 

 refuse the knowledge of the anatomy of men. 

 But you will find, as my system developes 

 itself, that it is absolutely consistent through- 

 out. I don't mean, by telling you not to 

 study human anatomy, that you arc not to 



* Larije and somewhat carefully painted diagrams were 

 shown at the lecture, which I cannot engrave but for my 

 complete edition. 



