. Scientific American Volume 33 Numéro 01 (juillet 1875). , Statoblast ; g, parasitaires globes ; h, h, la bouche ; je, dix-rétraction tacles au sein de cellule ; k, l'transparentenvelope perigastric ; je, l'espace ; m, lophophore, n,tentacules excisée pour montrer la bouche ; o, évent ; p, hol-faible du monde entier ; l'r, endroit où commence la division ; 8,cellule. La parfaite transparence nous permet d'witnessthe opérations internes de leur système. Le actionof l'estomac dans le processus de la digestion peuvent beobserved avec beaucoup de clarté. Le contenu areseen parfois à se composent de petites desmidiées et otherdisk et globulaire en forme de corps, ensemble

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. Scientific American Volume 33 Number 01 (July 1875). , statoblast; g, parasitic globes; h, h, mouth; i, ten-tacles retracting within cell; k, outer transparentenvelope; I, perigastric space; m, lophophore; n, tentacles excised to show mouth; o, vent; p, hol-low globe; r, place where division commences ; 8, cell. The perfect transparency enables us to witnessthe internal operations of their system. The actionof the stomach in the process of digestion can beobserved with great clearness. The contents areseen at times to consist of small desmids, and otherdisk-shaped and globular bodies, together with de-cayed vegetable matter, etc. The action of the ciliaon the expanded tentacles causes a current of waterto set in towards the mouth {a, h, 7t, ), bringing withit the food required; and if in the vortex thus formedthere should be any large and objectionable pieces, they areprevented from entering the mouth by a quick, lashing mo-tion of the tentacle, which rejects and throws them out ofthe reach of the vortex. The accepted morsel passes direct-. stagnation In Business tbe If orld OTer. It is poor consolation in adversity to know, saysthe Commercial Advertiser, that we are not alone inour misery; such as it is, however, our iron manu-facturers may take it to themselves. The depres-sion of the iron trade is general throughout the world. Theproduction of pig iron in Scotland was less in 1874 than inany of the last twenty years. At one time there were onlythirty-two furnaces blowing, out of one hundred and thirty-two erected, and the production was 400, OCO tuns less thanin 1870. Russia, notwithstanding its activity in railroadbuilding, imported only 5, 231, 000 lbs. of rails, against 7, 119, -QOO in 1873. In Prussia the large steel works of Krupp havedischarged some thousand workmen, and the Biirsig manu-factory of engines at Berlin—the most extensive in Germany—has had to protect itself by taking a similar step. Lastmonth the largest Austrian manufactory of engines (Sigl)di

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