Which living creatures were used by scientists in the 19th century to measure the air temperature?

Crickets seem to be loudest in the summer when it is very hot outside

Anyone remember Eddie Murphy in Dr. Dolittle tell his daughter to listen to the crickets to tell if it's chilly out?

Buffalo Bills Fan, I learned the answer watching the Big Bang Theory

I learned this when I was 11 years old, my brother taught me. It was 1972

Also, good fish bait!

Gotta thank the big bang theory again for so much knowledge!

When I worked at a package Delivery company we Had crickets living behind The refrigerator. They get shipped in Egg cartons. One of The cartons Broke and they escaped.