Ways of telling Temperature

• Crickets -take the number of chirps per minute, subtract 40, divide by 4, and add 30

• Rhododendron -at 60 degrees their leaves spread out, at 40 degrees their leaves droop, at 30 degrees their leaves curl, at 20 degrees their leaves tightly curl

(The Backpacker's Field Manual, A Comprehensive Guide to Mastering Backcountry Sills, by Rick Curtis)