The spelling of "Cadets fuming liquor" might confuse some people, as it seems like an unusual string of words. However, if we break it down using IPA phonetic transcription, we can understand its structure. "Cadets" is pronounced /kəˈdɛts/, with the emphasis on the second syllable. "Fuming" is pronounced /ˈfjumɪŋ/, and "liquor" is pronounced /ˈlɪkər/. Putting it all together, we get a phrase that might describe a group of angry military trainees drinking heavily.
Alcarsin, the product of distillation of a mixture of equal parts of potassium acetate and arsenous acid.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.