. Diphtheria: its natural history and prevention . 4-11 : 5-3887 7-60 1887 DIPHTHERIA in relation to Height and Fluctuation of Subsoil Water at Maidstone. The Cases of Diphtheria are represented in Red, and the number of cases that originated in the respective weeks is indicated by the sizes of the red Subsoil Wateb Level is represented in Blue, and the amount of fluctuation for the respective weeks is indicated by the sizes of the blue II ; III : IV II III i IV II : III ; IV 5-35 : 9-03 I 3-70 . 4-11 : B-3S 4-39 I 3-45 C-93 I 662 3-56 ; 5-74 587 7f ITS NATURAL HISTOR
. Diphtheria: its natural history and prevention . 4-11 : 5-3887 7-60 1887 DIPHTHERIA in relation to Height and Fluctuation of Subsoil Water at Maidstone. The Cases of Diphtheria are represented in Red, and the number of cases that originated in the respective weeks is indicated by the sizes of the red Subsoil Wateb Level is represented in Blue, and the amount of fluctuation for the respective weeks is indicated by the sizes of the blue II ; III : IV II III i IV II : III ; IV 5-35 : 9-03 I 3-70 . 4-11 : B-3S 4-39 I 3-45 C-93 I 662 3-56 ; 5-74 587 7f ITS NATURAL HISTORY, AND PREVENTION loi ground air into the atmosphere around the subsequently proceeds as follows :— How can the behaviour of the subsoil water-levelbe supposed to act ? Is it mechanically, by forcing thegerm-charged air out of the soil into the air which webreathe, or is there some more intimate biological con-nection between the two things promoting the activityof the germ ? Probably both ideas are correct. Therecan be little doubt that a damp condition of the soilfavours the development of the microbe; in all proba-bility it cannot live actually submerged in water, immer-sion would drown it, for it does not appear that there isa tittle of evidence to indicate that diphtheria is everwater-borne; we must therefore believe that if it existsin the soil it lives somewhere above the water-level. Itis equally probable that much drought wi
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