Although a large number of insects are injurious to crops and are to be eliminated or effectively kept under check, there are a number of insects which are of use to man in a number of ways and need protection. There are many crops, particularly those of fruits and vegetables that cannot be successfully grown and harvested without the active [...]
5The three universally appreciated insects are the honey-bee, the lac insect, and the silkworm. Honey extraction from wild hives is definitely a case of exploitation, but modern bee-keeping provides an illustrious example of science enabling man to enter into a just and ethically sound partnership at least with one species of honey-bee. The relationship with the lac insect also need [...]
Insects are collected by nets and are killed with potassium cyanide gas slowly released in a capped wide mouth jar. Insects can be mounted and preserved in various ways. Most specimens are pinned, and, once dried, will keep indefinitely. Specimens too small to pin can be mounted on "points," on tiny "minuten" pins or on microscope slides. Large and showy [...]