98 Cc. H. DANFORTH 
The specimen, a male, had moderately booted tarsi and was 
also strongly polydactyl. It met an accidental death at about 
nine months of age before any offspring had been obtained. 
The parents of this chick were full brother and sister (no. 8, 
#, and no. 7, 2). Both were polydactyl and both had booted 
tarsi. On closer inspection it was found that their fourth toes 
were somewhat shorter than normal. It was at first thought 
possible that the brachydactyly and polydactyly might be cor- 
rq 
A B 
Fig. 1. Bones of the left foot from (A) normal and (B) brachydactyl cockerel. 
related, that the excessive toe development on the medial side 
of the foot might be more or less at the expense of the tissues 
on the lateral side. The following data show that such was not 
the case. 
From the mating of nos. 7 and 8 only a few chicks were ob- 
tained. These included specimens with four and five digits, 
bare and feathered tarsi, brachydactyl and normal fourth toes. 
Some additional specimens secured by crossing no. 8 with a 
barred Plymouth Rock hen gave essentially the same distri- 
