I calculate that there are at least fifty-two separate bursæ (about one hundred on the two sides of the body) in the normal or fully developed state, though of these many will be found either absent or with very little of the full structure of a bursa. One small but significant point may be referred to here. We are all familiar with the prominence of the knuckles of the hand and the very efficient bursæ which cover them, but most persons do not recognise that the foot has no such knuckles (or prominent metatarso-phalangeal joints) and no bursæ over these joints, except that of the great toe which happens to be very much more exposed to friction and has a much greater range of action than the other four metatarso-phalangeal joints. This might be called by some persons a beautiful bit of adaptation _for_ locomotion and by others an equally admirable bit of adaptation produced _by_ locomotion. Examination of Two Still-born Children. Some further light may be thrown upon the human bursæ by an examination of two still-born children I dissected in 1908 in Lewisham infirmary, and give here the results as to the more important subcutaneous bursæ. _Male Child_: full term. _Shoulder_: bursæ under acromion processes absent. _Elbow_: bursæ over outer condyle of humerus present. " " inner " " absent. " " olecranon both present. _Wrist_: bursæ over styloid process of ulna present. " " " " of radius present. _Hand_: bursæ over metacarpo-phalangeal joints D 1 absent, D 2, 3, 4, 5 present. bursæ over phalangeal joints, first set present, second set absent. _Hip_: bursæ over anterior superior spine of the ilium both absent. _Knee_: prepatellar bursæ well-developed. _Ankle_: bursæ over both malleoli present: bursæ beneath tendo achillis well-developed. _Great toe_: plantar bursa present. _Little toe_: plantar bursa absent. _Toes_: D 1 (great toe) bursa over metatarso-phalangeal joint present. D 2, 3, 4, 5 bursæ over metatarso-phalangeal joints absent. Bursæ over _Phalangeal joints_. D 1 present. D 2, 3, 4, none over either of the phalangeal joints. D 5 bursa present over the first and absent over the second phalangeal joint. This example of a still-born, but otherwise normal infant illustrates well the previous statement that certain bursæ are congenital and others of less functional importance are formed after birth. Whereas the olecranon, wrist, patellar, ankle and tendo achillis bursæ are fully formed, those under the acromion processes, one of those of the condyles of the femur, and the digits of the hand, those over the superior anterior spines of the ilium and those of the foot are little if at all developed in this case.