Translation of a letter, from Antoni van Leeuwenhoek to the Royal Society Observations of the corn-weevel and corn-moth; pupation of the corn-moth; eggs in the ovary of the female moth and how the eggs were laid; how to remove moths from corn-lofts; structure of the egg shell; breeding of caterpillars and butterflies; examination of the insect calander; observations of lice in the corn-lofts; micro-organisms in rain water; black-flies in blossom; maggots in cheese Translation of EL/L2/33 1692