1112 
DR. H. WATNEY ON THE MINUTE ANATOMY OF THE THYMUS. 
Figs. 33 and 34. Camera lucida, obj. 7, X 450, oc. III., obj. 9. 
From the upper end of cervical portion of thymus of Calf fully one year old. 
The figures show granular cells. 
In fig. 33 the central part only is granular. 
gr. Granular cell with very coarse granules. 
In fig. 34 all parts of the cells are granular. 
F. Vein. 
Figs. 35, 36, 37, and 38. Camera lucida, obj. 7, X 450, oc. Ill, obj. 9. 
Drawings to demonstrate the attachment of the granular cells to the blood 
vessels, and to the connective-tissue trabeculae. 
Shaken sections of the thymus of Calf twelve days old. 
Fig. 35. The granular cell is attached to a capillary blood vessel; the vessel 
has a perivascular sheath. 
Figs. 36 and 38. Granular cells attached by processes to newly-formed con¬ 
nective tissue. 
In fig. 36 the processes of some of the granular cells are fibrillated. 
Fig. 37. The granular cells are attached, in the upper part of the figure, to 
newly-formed connective-tissue ( ct .) and below to (u) a capillary blood 
vessel. 
Figs. 39 and 40. Camera lucida, obj. 7, X 450, oc. III., obj. 8. 
Fig. 39. From shaken section of thymus of Calf twelve days old. 
a and b. Granular cells attached to network, 
c and d. Granular cells of large size and various shapes. 
Fig. 40. From thymus of Calf nearly one year old. 
e and f Granular cells with processes. 
Fig. 41. Camera lucida, obj. 7, X 450, oc. III., obj. 9. 
Shaken section of thymus of Calf twelve days old. 
etc. Connective-tissue-corpuscle, containing a nucleus and granular mass. 
Fig. 42. Camera lucida, obj. 7, X 450, oc. III., obj. 9. 
Shaken section of thymus of Calf twelve days old. 
Granular mass, attached to part of network of connective-tissue-corpuscles. 
Fig. 43. Camera lucida, obj. 7, X 450, oc. III., obj. 9. 
Shaken section of thymus of Calf nearly one year old. 
A granular cell attached to a blood vessel. 
Figs. 44, 45, and 46. Camera lucida, obj. 7, X 450, oc. III., obj. 9. 
Sections of thymus of foetal Lamb six inches long. The tissue was 
hardened in osmic and chromic acids. 
Fig. 44. Epithelioid connective-tissue-corpuscles, containing granular masses 
of various sizes. The granular masses are apparently nucleated in 
D. and E. 
A. Epithelioid cell, containing a small granular mass, and a nucleus. 
