Grayling Fly: a trout pattern from Favorite Flies and Their Histories (1892) by Mary Orvis Marbury

Hook: #8 sproat
Thread: claret
Rib: gold, oval tinsel or wire
Body: claret (rusty brown) dubbing
Hackle: soft brown rooster
Wing: rolled brown mallard

https://www.online-literature.com/andrew_lang/angling-sketches/1/

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