Sweet potato starch

Sweet potato starch

772 CURRENT ToPIcs. [J. 17. I. I933, XXV, 563-564) have studied the occurrence of fat-soluble vitamin D, which prevents rickets, in the oil of the ...

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772

CURRENT ToPIcs.

[J. 17. I.

I933, XXV, 563-564) have studied the occurrence of fat-soluble vitamin D, which prevents rickets, in the oil of the California pilchard or sardine (Sardinea caerulea) and the tuna (Neothunnus macropterus). Their results indicate that, with improved methods of refining, edible tuna oil may be of therapeutic value, in the same manner as cod liver oil. J. S. H. Sweet Potato Starch.--The researches of F. H. THURBER (Ind. and Eng. Chem. Ind. Ed., 1933, XXV, 565-568) indicate that

starch manufactured from cull sweet potatoes is quite suitable for sizing cotton textiles, since it possesses satisfactory coating and penetrating qualities for cotton yarn. It has a relatively uniform viscosity over long periods of heating; therefore a uniform sizing bath can readily be maintained. J. S. H. Edgar Fahs Smith Memorial Library.--EvA ARMSTRONG (.four. Chem. Ed., 1933, X, 356-358) describes this collection of books,

journals, pictures, manuscripts, etc., on the history of chemistry, which is a valuable source of original material for research workers in this field. It was begun by the late Provost of the University of Pennsylvania, and has received numerous additions since his death. J. S. H.

THE F R A N K L I N INSTITUTE OFFICERS FOR 1933 President Vice-presidents

S$6regary

Assistant Secretary and Librarian Treasurer Assistant Treasurer Controller

NATHAN HAYWARD HENRY HOWSON C. C. TUTWILER WALTON FORSTALL "~V. CHATI~IN WETHERILL HOWARD MCCLENAHAN ALFRED RIGLING BENJAMIN FRANKLIN MARSHALL S. MORGAN WILLIAM F. JACKSON, JR.

Board of Managers HENRY BUTLER ALLEN GEORGE H . BENZON, JR. EDWARD G. BUDD FRANCIS T . CHAMBERS G. H . CLAMER THEOBALD F. CLARK WALTON CLARK CYRUS H . K. CURTIS

CHARLES H . EWIHG SAMUEL S. FELS ARTHUR W . GOODSPEED CLARENCE A. HALL GEORGE A. HOADLEY A. A T W A T E R K E N T L. H . KINNARD ELISHA LEE

ROBERT W . LESLEY HORACE P. LIVERSIDGE MALCOLM LLOYD, JR. CHARLES PENROSE GEORGE W H A R T O N PEPPER JAMES S. ROGERS GEORGE D . ROSENGARTEN HASELTINE SMITH