“It consists in the proper use of salvarsan and mercury begun at the earliest possible moment after infection and kept up till all biochemical evidence of the disease has ceased, while the metabolism of the individual is maintained as nearly normal as possible. But the physician does not do his whole duty when he has accomplished this. He must solicitously watch the individual to see that no evidence reappears for months and even years after the apparent cure. As an index of such reappearance the Wassermann test of the blood serum and of the cerebrospinal fluid is the safest guide. “Until there is a definite unanimity of belief among physicians as to when the treatment of syphilis shall be begun, and some concert of action as to what constitutes the adequate treatment of syphilis, we cannot hope to make any considerable progress in the prevention of syphilis of the nervous system, save by educating the individual toward infection.” =TABETIC NEUROSYPHILIS may produce symptoms chiefly if not entirely in the region supplied by the CERVICAL plexus (“cervical tabes”).= =Case 31.= Paul Halleck, 35, was a salesman who had begun to find it hard to carry his sample case, since he was unable to tell whether or not he had it in his hand. There was not only an anesthesia of the hands, but they felt numb and there was often a tingling sensation. Of late it had become hard for Halleck to dress himself or to write, and these symptoms had been slowly growing worse. There was no other complaint. There was, however, a history of a chancre about 7½ years before, which had been followed by a rash and a sore throat. There had been treatment with mercury and potassium iodid alternating for a period of two years. =Physically=, there was no evidence of disease except =neurologically=. The pupils were unequal (the right larger than the left) and reacted slowly to accommodation and not at all to light. A marked ataxia of the hands was shown in coat-buttoning. The finger-to-nose test showed a marked dysmetria. Arm-jerks as well as knee- and ankle-jerks were absent. There was a slight swaying in the Romberg position but no true Romberg sign. There was no difficulty in locomotion. Both blood and spinal fluid proved positive to the W. R.; globulin and albumin were increased. The gold sol reaction was syphilitic, and there were 85 cells per cmm. This case is probably not a pure example of CERVICAL TABES, since the knee-jerks are also absent, and we may suppose a degree of lumbar spinal cord changes in addition to the cervical changes. It well illustrates, however, that the tabetic involvement of the cord may be quite generalized and that it may strike high as well as low. =ERB’S SYPHILITIC SPASTIC PARAPLEGIA.=