Macdonald, Duncan Elliott2016-03-032016-03-0319441944b147234027866458(Alma)99185863310001161https://hdl.handle.net/2144/14834This item was digitized by the Internet Archive.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsThe physical effects of ammonia, ammonia-carbonate, mercury, borax, and other hypersensitization methods on the spectral characteristics of certain infra-red photographic emulsions in the near infra-redThesis/Dissertation