Definition of bush sickness in English:
A deficiency disease of animals caused by a lack of cobalt in the soil (and hence in the diet).
- Once it was proved that bush sickness was not a contagious disease he deduced that it was probably traceable to a mineral deficiency in the animal's feed.
- Two members of the Soil Survey showed that bush sickness was associated with some but not all of the pumice showers concerned in the soil formation of the central volcanic area of the North Island.
- It is in the spring and early summer that bush sickness is prevalent.