PLEASURES OF ORNITHOLOGY. 37 



His curious perforations till, at length. 

 He bursts his walls calcareous and is free. 

 Nor pass YE o'er that nice Trachea (') forra'd 

 For sounds most exquisite. But wherefore dwell 

 On such confessed wonder and design ? 



Once more. Go seek YE in their various Nests 

 Much pleasure and much wisdom. Who shall cope 

 With Birds in Architecture ? Not nice skill 

 Of man's most practis'd hand ; not all the lore 

 Of Sages. Who can form the Trochilid's (") 

 Soft dome with rim within ; — the Wrens (^) globose 

 Of mossy green ; — the tiny Titmouse s{*) 

 With plumes full fill'd ; the Sylviad sutor's, (5) he 

 Who first taught man, perchance, to ply, with art, 

 The useful needle ? Swallow's esculent C) 



(•) 1 take the present opportunity of observing that Mr. 

 Yarrell, the gentleman mentioned in the preceding note, has 

 a cnrious collection of preserved specimens of tlje Trachea: of 

 birds as we\l as many other Ornithological curiosities, among 

 which, his specimens of Eggs are not the least important : the 

 whole an evidence of his extensive knowledge of the science 

 and of his zeal in its pursuit. 



(2) A Hymm/wg* tird mentioned in Waterton's Wanderings in 

 South America. The scientific specific name not known. See 

 Oruithologia, page 81. — {^) Sylvia troglodytes. — (*) Parus cau- 

 daiuSf or Long-tailed Titmouse. — (S) Sylvia sutoriOf or Tai- 

 lor BIRD. — (6j Hirundo esculenta. The exterior of this bird's 

 nest appears to be and most probably is gelatine. 



