There is at present no clinical test available which will enable us to judge the position exactly, but it is probable that a periodic thorough and careful investigation of the retinal arteries by a skilled ophthalmologist is likely to provide the best guide to whether the onset of arterial degeneration is beginning to threaten. A periodic careful investigation of the renal function is also desirable in such cases. Finally, every case must be considered on its individual merits-general, cardiological, renal, familial, and psychological. The author would like to express his great indebtedness to Mr. E. G. Tuckwell for his very helpful and stimulating surgical cooperation. REFERENCES
ANAMNESTIC REACTION WITH Rh AGGLUTININS BiouNA having been satisfactorily explained, interest was focused on the rising anti-D titre. After repetition of the tests it was concluded that the rise was more than could be accounted for by technical error.
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