[Illustration: PLATE III Longitudinal Section of a model Cocoa Factory For explanation of figures see text. Zipperer, Manufacture of Chocolate etc. 3rd edition. Verlag M. Krayn, Berlin W. 10.] =1. Chocolate factory= (Table I). By means of the lift (1) all the raw materials, sugar, cacao, packing materials, etc. are carried up to the store rooms (2). In these occur the machines for cleansing and picking the raw cacao beans. The raw cacao is fed into the elevator boxes (3), above the cleansing machine (4) where it is freed from dust; it passes to the continuous band (5) where it is picked and then falls into the movable boxes (6). It is then transferred to the hoppers (7) and is fed, by opening a slide in the hoppers, into the roasting machine (8). The capacity of the hoppers is sufficiently large for holding the quantity of beans for charging the roasting machine. After the roasting is completed, the cacao is emptied into the trucks (9) and carried to the exhaust arrangement (10) where the beans are cooled down and the vapour given off is passed out into the open air. At the same time, the roasting chamber is sucked out through the funnel shaped tube fitted to the cover of the chamber. The roasted cacao is then passed to the boxes (11) to be conveyed by the elevator to the crushing and cleansing machine (12). After being cleansed, the cacao is carried in trucks (13) to the hoppers (14) by which they are fed into the mills (15) in the lower floor. The sugar mill and the sifting apparatus (27) placed near the crushing and cleansing machines are also fed by a hopper from above. The dust sugar, there produced, is carried by the lift (1) to the machine room on the first floor. Cacao and sugar are there supplied to the incorporator (16) to be worked together, before being passed to the rolling mill (17), where the final rubbing is effected. After passing once or oftener through the mill, the finished chocolate mass is then taken to the hot room (18) where it remains in boxes until further treated and it is then taken to the moulding room. In the incorporator (19) the mass acquires the consistence necessary for moulding and also the requisite temperature. The mass is then taken in lumps to the dividing machine (20) and cut into pieces of the desired size and weight. On the table (21) the moulds, lying upon boards, are filled with the pieces of chocolate and they are then taken to the shaking table (22). From this they succeed to the cooling arrangement, which consists of an endless chain provided with travelling stages at definite and regular intervals. The latter moves slowly through the artificially cooled room and finally brings the moulds to the outlet (25) where the chocolate is removed. It is then transferred on the lift to the packing and despatching apartments specially reserved for these operations, but not distinctly noticeable on our section. =2. Cacao powder factory= (Table II).