MODE/iA/ 
PfiCfTOMSrOfi/C 
Mrijx 
TErdJy 
PUNUK 
LATE  PC/A/UK 
H  fc/J         Hrei 
\8/  w  f 
HfUx    TLkix     TLfpx   1L(g)x  TLnjy      HfcJy 
EARLY  PUAfUfK 
Uraix 
OCD  B£/?/A/G  S£/l- 
fy^RLY  PUAJUK 
ILx 
OLD  BER/NG  SEA 
Ix 
Iraly 
in.f6)x 
IKfalx 
Wx 
IKfUy 
JKmy 
pw.  24.— Chart  showing  chronological  development  of  open  socket  liarpu  n  heads  at  Ganibell. 
