We made 5 kinds, hayseed, sweet firn, cornsilk, mullin leeves, and grape vine.
"The Real Diary of a Real Boy" by Henry A. Shute
There are also two Species of firn which are common to this Countrey besides that before mentioned of which the nativs eate the roots.
"The Journals of Lewis and Clark" by Meriwether Lewis and William Clark
Ross Ice Shelf firn temperature, Antarctica.
A prototype station for ARIANNA: a detector for cosmic neutrinos