Ad: Meatox dry beef.

A statement of facts about Meatox granulated dry beef.
Meatox is a concentrated nitrogenous food made of pure lean beef. It is absolutely free from preservatives, and it keeps indefinitely even in unsealed containers.
Meatox is different from the so-called Meat Juices or Meat Extracts in that it contains all the nutritive elements of beef, - namely, assimilable proteids, which are the nutrients, whereas the Meat Extracts merely represent the stimulant parts of beef.
Whereas, good lean beef contains from 16 to 20 per cent. of proteids, and Meatox on the other hand contains from 73 to 75 per cent. of proteids, one pound of Meatox contains the nutritive substances (proteids) of from 4 to 5 pounds of lean, boneless beef, or about 10 pounds of ordinary butcher's meat with the bones and fat. The presence of this high percentage of proteid matter commends the use of Meatox as a dietary necessity to the discriminating physician.
Prepared only by Charles Marchand Chemist and graduate of the "Ecole Centrale des Arts et Manufactures de Paris" (France)
New York City.

This image is from Ellingwood's Therapeutist, January 1908.