BOYER—MESODERM IN TELEOSTS. PL.IV 
L.iV. 
2/9, 2: @ = Sigiare 
\@ @, 6 @\ 
, ey O@8 F 
gplplit. 
ERB del. er 
: ‘clmowm. : 
Fi ers A B Meisel, lith.Boston. 
