9:00 p.m.
Peterson was asked , referring to the brownish `` milk '' subsequently identified as coming from a dainty young cow known as Melody Buttercup Greenbrier IV . `` One thing at a time , '' replied Peterson . `` Let 's find out what we have here before we got involved in the second problem . '' At 9:00 p.m. , that night , Peterson was called to the radiation labs . He was met at the door by a glazed-eyed physicist who led him back to his office . He motioned Peterson to a seat and then handed him a sheaf of photographic papers and other charts . Each of the photo sheets had a clear , white outline of a test beaker surrounded by a solid field of black .