122 ROSS G. HARRISON 
4. Heteropleural, dorsoventral 
Experimental Tr. E. 193. April 14, 1916. Right limb to left flank, 
dorsoventral orientation; diameter of transplanted bud 3| somites. 
April 15. Wound perfectly healed. 
April 17. Transplanted bud, rather larger than normal, points 
posteriorly. 
April 21. Transplanted !)ud has large base, but free portion is 
slender; points distinctly posteriorly. 
April 28. Transplanted bud growing, though much smaller than 
normal. Points dorsoposteriorly and has two digits. 
Maj' 1. Digits more distinct. Slight bending at elbow. Has posi- 
tion of normal left limb. 
May 7. Three digits and trace of foiu-th. A normal left limb in 
almost normal posture (fig. 27). 
Experiment Tr. 167. February 24, 1916. Right hmb bud to left 
flank, dorsoventral orientation. 
February 25. Wound completely healed. Transplanted bud prom- 
inent. 
Felj. 28. Transplanted bud a large blunt prominence which points 
posteriorly. 
]\Iarch 3. Transplanted bud is very small; may be resorbed. 
March 7. Grafted limb much smaller than normal, but growing. 
INIarch 11. Considerable growth, but still smaller than normal. 
Slight indication of elbow bend and digits. 
■March 15. Digits marked. Limb looks like a normal left reversed, 
though it sticks out to side more than the normal limb. 
^larch 24. Third digit now plain. Arm points to side. Hand 
transverse and vertical with respect to body. 
March 29. Preserved. Transplanted limb a normal left in nearly 
normal posture. Fourth digit indicated. Upper arm still sticks out 
more to side than normal, but otherwise little difference except in size. 
Experiment Tr. E. 129. May 13, 1914. Right limb to left side, 
dorsoventral orientation. Transplanted disc 3 somites in diameter. 
May 14. Wound perfectly healed. 
jNlaj' 18. Transplanted bud has grown considerably, points pos- 
teriorh-. 
]\Iay 25. Grafted limb points laterally and a])Out 30° caudally, is 
l)idigitate. Hand and perhaps forearm are being reduplicated on 
anterolateral border. 
June 6. Specimen preserved. Imperfectly symmetried double 
hand, mirrored from I'adial plane. Arm stretches out to side with 
elbow bending ventrally. The posterior (original) hand is a left 
(reversed) , as is the arm as a whole ; it has four digits normally placed ; 
the anterior (reduplicating) hand is less perfect with only three digits, 
one long one in the middle and a short one on each side, the first digit 
being imperfect. 
Experiment Tr. E. 163. Fe])ruary 24, 1916. Right limb bud to 
left flank, dorsoventral orientation. 
