The use of jellies derived from lichens and marine algæ has been much less extensive in America than in many other countries; in Japan especially they form a staple article of diet. Iceland moss and Irish moss are occasionally employed in this country, and at one time they had a decided reputation as being suitable for the use of invalids and convalescents. With the vegetarians vegetable gelatins have occupied a prominent place among the substitutes for animal food. The clear moss jellies which "do not reek of the stockyards and the abbatoir" have been so highly extolled for their supposedly great nutritive value, as well as for their esthetic advantage, that some such "vegetable gelatins" have found a considerable sale.
The view that these vegetable jellies are highly nutritious seems to have passed almost unchallenged, the chemical investigations which have been made having been generally inadequate and, as is often