Fin Fly: an 1882 Orvis trout fly pattern

From the illustration in Favorite Flies and Their Histories (1892) by Mary Orvis Marbury

Hook: #8 sproat
Thread: claret
Tag: gold tinsel
Tail: brown hackle barbs
Body: light red floss
Hackle: Badger
Wings: white quill

Head cement recipe:
Goop
Xylene (epoxy thinnner)

Instructions:
Fill a quart jar half full with Xylene
Squeeze a tube of Goop into the Xylene
Shake until the Goop is dissolved; add Xylene to desired consistency

Apply with a pin or needle dipped in the liquid

https://youtu.be/AJbvJUixaCs