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Information was collected among six participating medial centers on frequency of performance and the percentage of abnormality of 30 tests performed on patients with complaints suggesting transient ischemic attacks (TIAs). A number of these were commonly performed and commonly exhibited abnormalities. Although the diagnosis of TIA is made by history and physical examination, these tests were of value in aiding the physician to determine possible causes of TIA, to detect risk factors of associated conditions, to rule out alternative diagnoses, and to assess the patient's ability to tolerate different types of therapy.

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SINCE the tuberculin tine test was described by Rosenthal (1) in 1961, there have been stud¬ ies comparing it with the intradermal tuberculin skin test with purified protein derivative (PPD-S) (2-6). The impressions from results of these studies have been that the tine test is a good screening test, but that the intradermal test remains the diagnostic standard. The diag¬ nostic use of the tine test is considered limited because of uncontrollable variables in the manufacture of the antigen and application of the test. These include (a) the crudeness of old tuberculin as an antigen, (b) the variable potency of old tuberculin, and (c) poor control of dosage, which varies with force, depth, and duration of puncture. After the tine test was made available for general use in July 1964 at the Public Health Service Hospital, Baltimore, Md., there devel¬ oped among the house staff the impression that it was not sufficiently sensitive. This impres¬ sion prompted this study, which is a comparison of the tine and intradermal tests and an assessment of the use of the tine test in hospital practice. Government Printing Office, Washington, D.C. 20402. Orders should be accompanied by cash, check, or money order and should fully identify the publication. Public Health Service publications which do not carry price quotations, as well as single sample copies of those for which prices are shown, can be obtained without charge from the Public Inquiries Branch, Public Health Service, Washington, D.C. 20201. The Public Health Service does not supply publications other than its own.

vision in one eye,48 and we believe that the combi¬ nation of this episode and the clinical and labora¬ tory evidence of hypopituitarism should alert the clinician to the possibility of intracranial aneurysm, even in the absence of alterations in the roentgenograms of the skull.