184 



BRITISH BIRDS. 



fine fibrous roots, a single flowering head of grass (still 

 green), and a very little horsehair. The outside measure- 

 ments of the nest were : depth, SJ in. ; diameter, 4 in., 

 extending to 5 in. where the nest was built round the stems 

 of the supports, tapering downwards to the centre almost 



Nest of Marsh -Warbler in Somerset, June 28th, 1908. 



to a point ; interior diameter, 2 in. ; depth, 1^ in. This 

 nest was originally located on June 10th by watching the 

 birds building, and at the time of my visit, June 28th, 

 it contained four eggs in an advanced state of incubation. 

 They are quite typical, and cannot be confused with the 



