Examine, by the aid of a hand lens, the feet and head of the spider.
Remove one of these scales and examine it under a hand lens.
Take some home and examine them with a hand lens, then with a microscope.
Seen through a hand lens, the mature insects look like tiny cicadas.
Soften the leaves by soaking in hot water, unroll carefully and examine with a hand lens or low power of the microscope.
These minute openings occur in the ridges of the skin, and may be easily seen with a hand lens.
A hand lens should be used in studying these insects, observations being carried on from May to September.
(b) Remove the cover of the plate, and by means of a hand lens count the colonies appearing in each of the sectors in turn.
This character is not evident without the use of a hand lens.
They do not show very well in the photograph, but can be made out much more clearly with a hand lens, 12.