Für jeden Versuch wurde eine Anzahl Topfpflanzen während der Blüthezeit in ein Gewächshaus gestellt, sie sollten für den Hauptversuch im Garten als Controlle dienen bezüglich möglicher Störungen durch Insecten.
For each experiment, a number of potted plants were placed in a green-house during the flowering period; these were supposed to serve as a control for the main experiment in the garden with regard to possible disturbances by insects.
quantity = Anzahl See p. 3, s. 8.
control = Controlle The language of control experiments was already quite widespread in science and medicine at Mendel’s time, even if its statistical foundation had to wait until the twentieth century. See Edwin G. Boring, “The Nature and History of Experimental Control”, The American Journal of Psychology 67 (1954), 573–89; see p. 6, s. 11.
disturbances = Störungen See p. 5, s. 7.