Cats
Laboratory at Tuskegee Institute, Alabama (maintained there from summer 1966 to mid-
1969). No Barrington Brown carriers were believed to exist outside of the colonies and
Barrington and Tuskegee. Studies established that the light tan or cafe-au-lait colouration was
due to the combined effects of "standard chocolate dilution" and their Barrington Brown
gene.
Shaw had left the project in July 1968 and Durdle reportedly terminated the colony in June
1969 (this suggests the cats were destroyed, neutered or used in other research). To their
knowledge - and to the ongoing chagrin of many breeders - the Barrington Brown cats had no
direct descendents in the cat fancy and the gene was lost. However, Shaw noted that some
"doubly diluted" kittens were appearing in the cat fancy. These had no apparent connection to
the Barrington or Tuskegee cats. He also mentioned unconfirmed reports of a dilution system
similar to the “standard chocolate dilution" but not traceable to any known chocolate
ancestry
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