Transcriber's Notes:
Reading edition
Footnotes have been placed at the end of chapters.
Obvious punctuation errors repaired.
page 52 "posioning" changed to "poisoning" (uric acid poisoning)
page 57 "familes" changed to "families" (gouty familes are especially)
page 69 "urid" changed to "uric" (so-called uric-acid disorders)
page 95 "Immutiny" changed to "Immunity" (Passive Immunity)
page 97 "Inthe" changed to "In the" (In the Centralblatt für Bakteriologie)