_Cocoa_, or, literally, cacao, from the cacao-tree, comes in the form of a thick seed, twenty or thirty of which make up the contents of a gourd-like fruit, the spaces between being filled with a somewhat acid pulp. The seeds, when freed from this pulp by various processes, are first dried in the sun, and then roasted; and from these roasted seeds come various forms of cocoa.
_Cocoa-shells_ are the outer husk, and by long boiling yield a pleasant and rather nutritious drink. Cocoa itself is the nut ground to powder, and sometimes mixed with sugar, the husk being sometimes ground with it.
In _Chocolate_--a preparation of cocoa--the cocoa is carefully dried and roasted, and then ground to a smooth paste, the nuts being placed on a hot iron plate, and so keeping the oily matter to aid in forming a paste. Sugar and flavorings, as vanilla, are often added, and the whole pressed into cakes. The whole substance of the nut being used, it is exceedingly nutritious, and made more so by the milk and sugar added. Eaten with bread it forms not only a nourishing but a hearty meal; and so condensed is its form, that a small cake carried in traveling, and eaten with a cracker or two, will give temporarily the effect of a full meal.
In a hundred parts of chocolate are found forty-eight of fatty matter or cocoa-butter, twenty-one of nitrogenous matter, four of theobromine, eleven of starch, three of cellulose, three of mineral matter, and ten of water; there being also traces of coloring matter, aromatic essence, and sugar. Twice as much nitrogenous, and twenty-five times as much fatty matter as wheaten flour, make it a valuable food, though the excess of fat will make it disagree with a very delicate stomach.
_Alcohol_ is last upon our list, and scientific men are still uncertain whether or not it can in any degree be considered as a food; but we have no room for the various arguments for and against. You all know, in part at least, the effects of intemperance; and even the moderate daily drinker suffers from clouded mind, irritable nerves, and ruined digestion.
This is not meant as an argument for total abstinence; but there are cases where such abstinence is the only rule. In an inherited tendency to drink, there is no other safe road; but to the man or woman who lives by law, and whose body is in the best condition, wine in its many forms is a permissible _occasional_ luxury, and so with beer and cider and the wide range of domestic drinks. In old age its use is almost essential, but always in moderation, individual temperament modifying every rule, and making the best knowledge an imperative need. A little alcoholic drink increases a delicate appetite: a great deal diminishes or takes it away entirely, and also hinders and in many cases stops digestion altogether. In its constant over-use the membranes of the stomach are gradually destroyed, and every organ in the body suffers. In ales and beers there is not only alcohol, but much nitrogenous and sugary matter, very fattening in its nature. A light beer, well flavored with hops, is an aid to digestion, but taken in excess produces biliousness. The long list of alcoholic products it is not necessary to give, nor is it possible to enter into much detail regarding alcohol itself; but there are one or two points so important that they can not be passed by.