Bui. 50, Bureau of Entomology, U. S, Dept. of Agriculture 
Plate X. 
Work of Bollworm in Cotton Bolls. 
Fig. 1, Bollworm eating into a half-grown cotton boll, twice natural size; fig. 2, bollworm borin^- 
into a tull-sized cotton boll, .slightly enlarged: fig. 3. full-grown bollworm and it.s work in large 
cotton boll, somewhat enlarged; fig. 4, cotton boll onlv partiallv destroyed bv bollworm two 
"locks" open, the others destroyed, natural size (original). 
