vi 
Contents 
Plate XVII. 
Plate XVIII. 
Plate XIX. 
Plate XX. 
Plate XXI. 
Plate XXII. 
Plate XXIII. 
Fig. 19. Foreskin of Negro to show transition 
from normally pigmented skin to albinotic patch. 
Fig. 20. The same as (19) enlarged and reversed ; 
to show transition with gradual disappearance of 
melanin granules from the deepest cells of the 
stratum rnalpighii. Fig. 21. Microphotograph of 
skin of albino showing a freckle (corrugated 
portion) in an albinotic area. Fig. 22. Freckle 
in (21) enlarged to show melanin granules in 
deepest cells of stratum rnalpighii, constituting 
the freckle, and to indicate how these granules 
gradually disappear as transition is made to 
albinotic skin . . . . . . to face p. 349 
Fig. 23. Normal Native, Moyichandi and Sikumbiri 
from left to right. Grades of albinism in Nyasaland 
Natives. Fig. 24. Chibwana, an albino with 
mother and sister, from Ohikala. Fig. 25. Alice, 
an albino baby, and her mother from Chikanji's 
village .......... „ 
Fig. 26. Head of Pingo, an albino from Chitalu. 
Fig. 27. Pingo, an albino from Chitalu. Fig. 28. 
John, an albino from Mwandanas . . . ,, „ 
Fig. 29. Chisfufu. Special type of Leucoderma, 
Ziemann's " Melung „ 
Short Pedigrees of Nyasaland Albinos . 
Folding Plate. Pedigree of the S. Family with 
Hereditary Lobster Claw ..... 
Lobster Claw Family. Figs, (i) and (ii). Skiagrams 
of Feet 
)) J) 
388 
Plate XXIV. Lobster Claw Family. Figs, (iii) and (iv). Skiagrams 
of Hands ........ 
Plate XXV. Lobster Claw Family. Figs, (v) — (viii). Photographs 
of Hands and Feet ...... 
Plate XXVI. Lobster Claw Family. Figs, (ix) — (xii). Photographs 
of Hands and Feet ...... 
Plate XXVII. Lobster Claw Family. Figs, (xiii)— (xviiij. Photo- 
graphs of Hands and Feet ..... 
