If a similar reaction had taken place in the treatment of ~u-p.oxy- brom

.I

272

S. MUNSON A N D

L. M. TOLMAN.

If a similar reaction had taken place in the treatment of ~u-p.oxybrom-dihydro-brom-isoapiol with ethyl alcoholic potash, a compound having the following composition would have resulted : C,Br{ OCH, I OCH, C H ( O H ) -CH (OC,H,) -CH, This substance contains 46.28 per cent. of carbon and j.23 per cent. of hydrogen, which are quite different from the figures obtained by analysis. For the present, therefure, we prefer to retaiii the ketone formula above-mentioned. This line of investigation will be continued and extended to some other substances of a similar constitution.

[CONTRIBUTIONFROM THE BUREAU OF OF

CHEMISTRY, U. S. DEPARTMENT BY H. 1%'. \\'ILEY.]

AGRICULTURE NO. 47.-sENT

T H E COMPOSITION OF FRESH AND CANNED PINEAPPLES. RY

I,. s.

SfT'KSOS A S n

I,. l f , 'I.OI.ZIAN.

Received J n n u a r y

2 , 1903.

THEwork undertaken in connection with the investigation of the composition of fresh and canned pineapples consists of the analysis of ( I ) fresh pineapples from various sources, ( 2 ) canned pineapples that were put up under supervision of the Consuls General of the United States at Singapore and Xassau, and (3) commercial samples of canned pineapples. D E S C R I P T I O S O F SAN€'LI