PLATE 4-5 



EXPLANATION OP FIGURES 



13 A larva of A. punctatum with an eye graft and skin graft of a larva of 

 the same species. The grafts were taken from the same individual as were the 

 grafts of experiment 33 (fig. 1-1). Host and graft still larval; the color of the 

 skin of host and graft is still 'even yellow brown' (without network and yellow 

 spots); the ring of the eyes of the host and graft still an unbroken yellow line. 

 Seres XXV. experiment 34; hatched on May 5, 1916; operated on July 19; neither 

 host nor graft had metamorphosed on January 1. 1917. when the animal died. 

 Photographed October 19, 191(5, in four times the natural size; painted a few days 

 later from the live specimen. (When the original painting was reproduced 

 much of the detail, particularly the distinctness of the graft's borders, was 

 lost.) 



14 A. punctatum with skin and eye graft taken from same animal as graft 

 of experiment 34 (fig. 13). Host and graft metamorphosed; skin of host and 

 graft have developed the yellow spots ; the three orange yellow spots belong to the 

 graft. The ring of all three eyes broken up into dots; only a few yellow dots 

 still present (the picture shows these conditions only in the grafted eye). Series 

 XXV, experiment 33; hatched on May 5, 1916; operated July 19; metamorphosed 

 September 8; photographed October 10. Photograph enlarged four times and 

 painted February 18, 1917, from preserved specimen and with the aid of the notes 

 made during observation of the live animal. (The use of only a limited num- 

 ber of colors in reproducing this drawing has made figure 14 a mere diagram 

 with regard to its colors.) 



15 Larva of A. tigrinum with a skin graft and eye graft from a larva of A. 

 punctatum. Host and graft still larval; host with large gills; grafted skin 'even 

 yellow brown' (without network and spots); iris of grafted eye still an unbroken 

 yellow line. Series XXVI. experiment IV; operated July 21, 1916; at the time 

 of operation the host was 57.00 mm. long and the animal from which the graft 

 was taken was 36.90mm. long; both were larval. Host and graft metamorphosed 

 October 27 (fig. 17). Drawn and painted October 10 from living animal; natural 

 size. (Photo 9.) 



16 A. tigrinum with eye graft and skin graft from A. punctatum. Host and 

 graft metamorphosed. The host has no gills and has developed on the skin the 

 colors of the young A. tigrinum; grafted skin has developed yellow spots of the 

 A. punctatum type. King of grafted eye broken up into dots; only a few yellow 

 dots left. Series XXVI, experiment 7; operated July 21, 1916; at the time of- 

 operation the host as well as the animal from which the graft was taken, were 

 larval; size of host was not recorded; size of animal that furnished the graft was 

 31.20 mm. Host metamorphosed September 29; photographed October 10 (at 

 the same time as experiment 4 in figure 15) and painted a few days later from liv- 

 ing animal; natural size. (Photo 12. ) 



17 A. tigrinum; same animal as in figure 15, but after it had left the water. 

 Host and graft metamorphosed. Ring of grafted eye broken up; only a few 

 yellow dots left. Photographed November 20 (about three weeks after meta- 

 morphosis) and painted a few days later from living specimen; natural size. 

 (Photo 13.) 



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