Under the title of "hay-fever" the author has described three separate conditions—hay-fever (hay-asthma), paroxysmal sneezing (vasomotor rhinitis) and idiopathic rhinorrhea (nasal hydrorrhea). The first he distinguishes by ascribing as its chief etiologic factor the pollen of plants; the second depends more largely on neuroses and pathologic conditions of the upper respiratory space; and the last he attributes to neurotic condition more largely, to chronic sinus diseases or to trauma. The constitutional states as predisposing factors overlap in the three conditions. The subject is treated historically and from the standpoint of the different theories and hypotheses. The frequent association of asthmatic symptoms is kept in view, but nothing is said about the theory of anaphylaxis as a factor. Not much that is new is advanced in the treatment. The work is an interesting review of the subject.