14A US theoretical physicist who worked with Neilsbohr W?E?L?R
32A shrub in the olive family which shares botanical name with Greek nymph S?L?C
55A summer visitng perpetually flying bird S???T
36D 1935 novel by author of Tobacco Road ?O?R?E?M?N
47D scientist who was co-founder of chemotherapy E?R???H
48D seed pod such as ben or lentil ?E?U?E