1. Philips Technical Review, Vol;BoUMA;IX,1947
2. MANN and SHARPLEY.-J1. Physiol, VOl. CVI, pp. 301-304, 1947.
3. In Cowdry's " Problems of Ageing,";MILEs
4. English anatomists do not appear to have paid minute attention to this subject." So wrote Lockwood in 1886, 83 years after
5. The sheaths of the inferior muscles unite as they cross at right angles. They and the intermuscular membrane on each side are reinforced as it runs to join the medial and check ligaments at their insertions to the lacrimal and malar bones respectively. This reinforced portion was first described by Lockwood (1886), and is known as the suspensory ligament. The check ligament of the inferior rectus runs forward as a thin layer to the lower eyelid where it is attached between the tarsus and the overlying orbicularis oculi. -The sheath of the inferior oblique, or according to Russell, 1948, its inferior layer, is continuous with the suspensory ligament as it runs up to its lateral attachment to Whitnall's tubercle on the zygoma. From the sheath of the inferior oblique a delicate strand of fibrous tissue runs laterally to be attach'ed to the periorbita near the orbital floor. This, as Whitnall suggested, may be inconstant