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Updated: May 26, 2025
This is the process of spore-formation and we see that from a single individual we may have by division, not two animals as in the amoeba, but a score or more of them. The little cysts or capsules that inclose them enable them to resist without injury many vicissitudes that would otherwise destroy them.
The leaf, if badly infected, may not reach full size; it may curl; it may die and fall; the tree thereby is injured. From the fungus in the active diseased areas, another kind of spore develops rapidly. It is the summer-spore, which may be produced in prodigious numbers, and being discharged carries the disease elsewhere. All summer the process of spore-formation and distribution keeps up.
Very soon, however, each one attacks a new red corpuscle and the process of feeding, growth and spore-formation continues, taking exactly the same time for development as in the first generation, so every forty-eight hours in the case of the vivax, and every seventy-two hours in the case of the malariæ a new lot of these spores and the accompanying waste products are thrown out into the blood.
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