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24. [[underlined with double line]] upon material belonging to the department. [[/underlined with double line]] Oil of Tangai Nuts, by George & Doening Phar. D. Tangai nuts are of a brownish black color, varying size from a walnut to about half the size of a man's fist; they have four surfaces and are of such a shape that, if eight of them were placed face to face against their flattened sides a figure approximating to a sphere would be obtained. The shell which is thin and easily broken encloses a somewhat irregular shaped kernel. The integument surrounding the kernel is of a somewhat lighter brown color than the external shell and is more or less wrinkled by the process of drying. The freshly cut surface of the seed presents a slightly pinkish-white appearance upon which, moisture and oil may be seen gathering