ClipArt ETC
"Figure 7-hooks for extracting embryos, natural size; a,b,c, plain hooks; d, bill-hook, having cutting edge along the concavity." Elliot Coues, 1884

Hooks Used in the Process of Egg Blowing for the Purpose of Extracting Embryos

"Figure 7-hooks for extracting embryos, natural size; a,b,c, plain hooks; d, bill-hook, having cutting…