An Experiment with a burning glass
The Wall Street rumor-monger
Making the most of it
The next investigation?
A case of learned ignorance - why can't he trust his naked eyes?
"Oh, what a beautiful bug!"
"Hold on, now. Don't interfere with free enterprise"
"I wanted to make sure everything was clear"
The "press view" at the candidate show
Thermometer and magnifying glass. Setup of thermometer and magnifying glass
[Microscope and other scientific apparatus]
[Man looking at Moon picture with magnifying glass]
My! My! how it is shrinking!
The weaker sex. II
Lenses, Hand (Not Used for Indexing)
Making eyes for the army. Polishing lenses by hand in the optical department of an Army arsenal, where thousands of sights for guns are being turned out
Pocket lenses (Not Used for Indexing)