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MEMORAIDUM RELATIVE TO THE USE OF TD IN IHTERROGATION.

A. ADMTHISTRATION OF THE DRUG

This substance can be administered to the subject either by injecting it in cigarottes to be smoked by oubject, or by placing it in food which the subject is certain to congume.

The use of cigarettes is aomewhat unsatisfactory as the dosage cannot be accurately controlled. This results from the variety in smoking habita, since some peroons inhale deeply, some slightly and some none.at all. It is necessary for tho impregnated portion of the cigarette to be burning and the smoke therofrom.inhaled by the sutject in order to produce the desired effect.

When the substance is placed in food which the subject is certain to consume the dosage can be more carefully -controlled. Since the substance is odorless, colorloss and tastelcss, it cannot be detected in the food. The capacity of various people to absorb or tolerate this drug varies. I have found that a maximum of 3/l00 c.c. is sufficient to produce the desired effect on even the most resistant subject when ndministored intornally. Since some porsons do not lave as great a tolerance as others, it is susgested that the aruc be adminlstered in succeasive doses of l/mo0 c.c. until the desired effect is reached. The operator Is cuationed that internal dosago may

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take as long as 45 minutes to take effect, and that he should not become impatient and thereby givc an overdoae of the drug in attempting to cxpedite the proceas.

B. TLCINIIQUI;

If the operator will remember that the drug roughly produces the effect of mental intoxication without:.the symptoma of physical intoxication produced by alchbol he will have a practical estimate of the effect of the drug. In order'to obtain desirable rosults it is necessary to "got the stnCe" so the subiect-=ill not realize he is tho object of interro-Fation. The drug will not produce desired effect when the subject is on his quard as the rcsult of nornal apprehenaion. The interrogation should be carried out through protoxt and indirection. The technique used should be comparable to that adopted by investigators in a "roping" job.' This means the subject's confidance should be gained through aubtarfuge and pretext by the operator prior to the atteipt to aln the desirod inforation. é

Outstandinr characteristics of the drug'are the accentuation of subject's personality. If subject is a braggart the drug will increase thls trait. If ho is a aensunlist this characteristic will be exagceratad. The drug breods irrosponsibility and rolaxes inhibitions. It causea a poraon undor the influence to become excessively interested in a topic of

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converaation to the point where he will insist on giving his viewpoint on subjects under discussion. Appetite and thirst will sharply increase. It is well to accompany administration of the drug with the cunsumptlpn -of alcoholic drinks for the reason if any unusual aensatlons are experionced Ly subjoct they will be attributed to the alcohol and not to anothor cause. Alcohol doea not appear to affect the uso of the drug although, of course, excessive consumption of liquor would produce a dual intoxication.

Overdosage will not have serious physical rosults, but will make the subject aware some foreign substanco has boen administered to him. Upon receipt of an overdosage the subject will exprrience vertigo and faint and bocome unconscious for several minutes. Consciousness will then-be recovered anl the subject will quickly.return to normaI,-but he;will be fully aware that sorothlng hao happened to him.

Tho administration of the irug is usoless in a formal inquiry and can only be usod succossfully as an nccompanyment to tho gencral "roping" techniquo. A basis of trust arid friondship.must bo established by the operajor before adminiatering the drug.

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