General Hooker: a trout fly pattern from Favorite Flies and Their Histories by Mary Orvis Marbury

Hook: #6 straight eye
Thread: claret
Tag: flat gold tinsel
Rib: green
Body: yellow floss
Hackle: light brown webby rooster
Wing: slate 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