little as he, arise without a father and mother) will not easily find a reliable means
against them” [39]. He concluded that “An injurious bear is easily caught or killed,
but to catch or kill the same weight, if it could be transformed into flees, would be
impossible”. In another text, Bergman concluded that caterpillars could eat twice
their body weight a day, and continued: “If horses or cattle, which can weigh from
700 to over 1,000 skålpund [290–420 kg], could eat their double weight in a day,
these for humans so useful animals would since long been completely exctinct by
Fig. 5.5 The printed answers to the question “How worms, that make damage on fruit trees by
eating flowers and leaves, can be circumvented or expelled in the best way”. Photo Anders
Lennartson
68
5 Bergman’s Early Scientific Career
against them” [39]. He concluded that “An injurious bear is easily caught or killed,
but to catch or kill the same weight, if it could be transformed into flees, would be
impossible”. In another text, Bergman concluded that caterpillars could eat twice
their body weight a day, and continued: “If horses or cattle, which can weigh from
700 to over 1,000 skålpund [290–420 kg], could eat their double weight in a day,
these for humans so useful animals would since long been completely exctinct by
Fig. 5.5 The printed answers to the question “How worms, that make damage on fruit trees by
eating flowers and leaves, can be circumvented or expelled in the best way”. Photo Anders
Lennartson
68
5 Bergman’s Early Scientific Career