The word “ketchup” is adopted in this bulletin as the form which ought to be given preference. The derivation of the term is not definitely known. The spelling “catchup” given in some of the leading dictionaries appears to be based on the erroneous idea that the first syllable “ketch” is a colloquial form of “catch.” Several authorities derive the word from the East Indian or Malayan “kitjap,” because “ketchup” was originally a kind of East Indian pickles. Some give the word a Chinese origin, while others assert that it comes from the Japanese. A majority of the manufacturers employ the word “catsup,” a spelling for which there does not appear to be any warrant. PROCESS OF MANUFACTURE. [Illustration: Fig. 1.--A model receiving platform.] The making of tomato ketchup consists essentially in reducing tomatoes to pulp, removing the skins, seeds, hard parts, and stems, adding salt, sugar, condiments, and vinegar to suit the taste, and cooking to a proper consistency. The methods and practices of the various manufacturers differ, and the difference between the best and the poorest procedure corresponds to that between the best and the worst ketchup. No single factory has all of the best methods at every step of manufacture. Some perform certain details well and are negligent in others. In some, large amounts of money are spent on equipment to improve a particular point considered advantageous by the trade, while other details essential to the making of a good-keeping ketchup are disregarded. A statement of the best practice as observed at a number of factories, together with some facts obtained from experiments, will be given. SELECTION AND PREPARATION OF STOCK. The tomatoes should be home-grown, of a red variety having the minimum of yellow and purple color, be picked when ripe, and delivered to the factory promptly without mashing. All tomatoes should pass over an inspection table, the rotten and otherwise unfit fruit should be discarded, and the green tomatoes should be returned to crates to ripen. The stems should be removed when the best color is desired, and the tomatoes should be thoroughly washed to remove dirt and mold. Dumping a crate of tomatoes into a hopper of dirty water and playing a gentle spray of water on part of them merely wets the skin and makes them appear bright. [Illustration: Fig. 2.--Large receiving room showing the sorting belt.] PULPING.