Regeneration . Tlie most anterior cut (leftside), directed forward, pro-duced a tail. The one on theright side, directed backwards,produced a head. The mostposterior cut (left side) madea head with pharynx, and alsoa tail-like outgrowth. 42 REGENERA TION A somewhat similar result is obtained when an incision is made inthe side of the body of a planarian. A lateral head may grow outfrom the anterior edge of the cut-surface, as shown in Fig. 17. It has been shown by Loeb that if the incurrent siphon of the ascid-ian Ciona intestinalis be partially cut off, new eye-specks developaround the margin
Regeneration . Tlie most anterior cut (leftside), directed forward, pro-duced a tail. The one on theright side, directed backwards,produced a head. The mostposterior cut (left side) madea head with pharynx, and alsoa tail-like outgrowth. 42 REGENERA TION A somewhat similar result is obtained when an incision is made inthe side of the body of a planarian. A lateral head may grow outfrom the anterior edge of the cut-surface, as shown in Fig. 17. It has been shown by Loeb that if the incurrent siphon of the ascid-ian Ciona intestinalis be partially cut off, new eye-specks developaround the margin of the cut, as shown in Fig. \Z, A. I have repeated.
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