SYMMETRY IN TRANSPLANTED LIMBS 125 
May 24. Main limb points much more dorsally and laterally than 
normal (figs. 53 and 54, drawn May 22) ; no digits. Two reduplicating 
buds; posterior one (P.DU) points as in I. E. 60 (figs. 44 and 45); 
anterior one (A.DU) smaller and spur-like. 
May 29. Specimen pi-eserved (fig. 55). Main limb is a right 
(reversed) with two long digits and third digit on anterodorsal (ulnar) 
border. The posterior reduphcating member with three digits is free 
and is in approximately normal position for left limb (reversed back). 
It is mirrored in a radiodorsal plane. The anterior hand is bidigitate, 
and is mirrored in an ulnopalmar plane. Arm and fore arm of com- 
plex is short and thick. 
Experiment I. E. 49. May 14, 1915. Left hmb bud to left side of 
same individual turned 180°. Pi-onephros removed. 
May 15. Fairly well healed; irregular band of uncovered 5'^olk at 
posterior border of wound. 
May 21. Limb bud developing well, points dorsally with very slight 
anterior inclination. 
May 25. Limb points dorsall}^ (fig. 56) ; two digitatioas — hand flat- 
tened in vertical plane, making angle of 45° with bod}^ axis. 
May 29. liiml) points dorsoposteriorly, as if approaching normal 
position. 
Ma}^ 30. Limb has rotated still further toward normal position. 
June 3. Limb in nearly normal position (fig. 57, drawn June 4). 
June 11. Limb tends to lie partial^ adducted with dorsal surface 
of manus on bottom. 
June 17. Limb now perfectly normal in everj'^ respect — form, size, 
posture, motihty (fig. 58, drawn June 21, and fig. 59, drawn from 
specimen preserved thirty-nine days after operation). 
Experiment I. E. 55. May 23, 1915. Left limb bud removed and 
replaced inverted. Pronephros removed. 
May 24. Very well healed. Only a ver}' narrow uncovered strip at 
posterior border. 
May 27. Limb bud smaller and more pointed than normal. 
Ma3^ 30. Limb bud increasing, but not so large as normal. Sticks 
out more to side. 
June 2. Limb Inid points dorsoposteriorlj-, ventral part of bud 
prominent. 
June 7. Limb has grown considerably, points more posteriorly than 
before. Two digits; manus flattened in transverse plane. 
June 11. Posture of limb still abnormal. It points dorsopostero- 
laterally at about 45° to median and horizontal planes. Trace of third 
digit. 
June 17. liimb normal in every respect — form, size, posture, motiUtv. 
Experiment I. E. 85. April 10, 1917. Left limb bud to left side, 
rotated 180°+ (fig. 60). Pronephros removed; pronephros grafted 
along with limb bud. 
April 11. Well healed. 
April 14. Grafted bud about as distinct as normal, points dorsally 
and slighth' anteriorly. 
