The classes which represent single crossing-over between eosin and vermilion are eosin vermilion, and sable, and those which represent single crossing-over between vermilion and sable are eosin and vermilion sable.
"Sex-linked Inheritance in Drosophila"
Thomas Hunt Morgan Calvin B. Bridges
Of the three allelomorphs, white, eosin, and cherry, eosin is the most useful.
"Sex-linked Inheritance in Drosophila"
Thomas Hunt Morgan Calvin B. Bridges
Recently, eosin has been used to colour red and picric acid for yellow, both well diluted with water.
"Practical Bookbinding"
Paul Adam