| Paresis | Tabes dorsalis | Cerebro-spinal | |
| per cent. | per cent. | syphilis | |
| Blood Wassermann | 98-100 | 70 | 70-80 |
| Spinal fluid Wassermann | 97 | 60-80 | 85-90 |
| Pleocytosis | 98 | 85-90 | 85-90 |
| Positive globulin test | 100 | 90-95 | 90-95 |
| Colloidal gold test | 98-100 | 85-90 | 75-80 |
| Paretic curves | Luetic type of curve | Luetic curve | |
Other Chemical Constituents.—Normally the fluid reduces Fehling’s or Benedict’s qualitative copper solutions. It is well for one to gain experience with the degree of reduction to be normally expected as the test is but slightly marked. Quantitatively, the reducing substance is equivalent to 60-70 mg. glucose per 100 cc.
The urea is practically the same as in the blood, parallels any change in the latter, and has the same significance. Creatinine is about half that of the blood, and has apparently no clinical significance. Uric acid is present in still smaller proportion.
Delirium and Coma
It is difficult to make a sharp distinction between a disease showing delirium and one showing coma as delirious states tend to be followed by coma or such conditions may alternate.
In yellow fever the alert, suspicious mental state may give way to one of marked delirium requiring close watching to prevent the patient throwing himself from his bed.
In plague there is more of a mild delirious state in which the patient has a great tendency to wander about. The mental state is rather that of an intoxicated person with the thickness of speech and retardation of mental processes.
Typhus fever and spotted fever of the Rocky Mountains tend to produce stuporous states.
A delirious state, especially at night, is often noted in tsutsugamushi.
Rat bite fever also tends to show delirium.