> does anyone nowadays pay much attention to his honey bee classification methods
I don't have the book to hand, but there are more recent guidelines. I would check out:
Büchler, Ralph, et al. "Standard methods for rearing and selection of Apis mellifera queens." Journal of Apicultural Research 52.1 (2013): 1-30.
The COLOSS publications are uniformly thorough and authoritative, IMHO.
PLB
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