The Science record; a compendium of scientific progress and discovery . tation to which the phenomenon of red or greensnow in the arctic regions is due. They seek the lightwith avidity, always gathering, when confined in vessels,to the brightest side. It has been believed by many savants that the artemiasaliiia, a minute crustacean, also aided in giving the waterof the salt marshes of the Mediter-ranean its ruby color. This does not believe, and he pro-ceeds to demonstrate some curiousproperties of this strange states that the artemia owes itsown color to its consumption ofth


The Science record; a compendium of scientific progress and discovery . tation to which the phenomenon of red or greensnow in the arctic regions is due. They seek the lightwith avidity, always gathering, when confined in vessels,to the brightest side. It has been believed by many savants that the artemiasaliiia, a minute crustacean, also aided in giving the waterof the salt marshes of the Mediter-ranean its ruby color. This does not believe, and he pro-ceeds to demonstrate some curiousproperties of this strange states that the artemia owes itsown color to its consumption ofthe monads which are taken intoits digestive canal. The artemiais naturally colorless, and its food,together with crystals of marinesalt, shows through its body, thuscausing it to appear red. Fig. 3is a section of its digestive tube,in which a a are the monads, notyet digested, and b the cubicalcrystals of sea-salt. The animal it-self is represented in Fig. 4, in bothits natural size and highly magni-fied. 0 and y y are eyes ; a and eantennae ; p is the incubating poc-. Fig. 472 SCIENCE RECORD. ket, showing the eggs within ; i to 11 are feet, serving bothfor purposes of respiration and propulsion ; a b is the ab-domen, and a p the caudiform appendage ; c\% the diges-


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Keywords: ., bookcentury1800, bookdecade1870, booksubje, booksubjecttechnology