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samples, while in the other two no iron was present at all. The 

 ash from the incineration of a larger sample of the weed showed 

 very small traces of iodine. Before incineration all adhering 

 sand was removed, yet in the ash small quantities of silica were 

 recognised. Qualitative analyses of the Fuci and Laminaria 

 sacchariiia led to very similar results. Qualitative analyses of 

 the organic portion of the seaweeds showed that cellulose formed 

 the greater part of the tissue. It was noted that when Laminaria, 

 especially, was allowed to stand in water, a thick mucilage was 

 formed. Large "blisters" were formed on the fronds probably 

 by'endosmosis. These vesicles ultimately burst, and a gum-like 

 material exuded. This at first was quite colourless, but later it 

 became opaque, and a white scaly material was dejDOsited on the 

 sides and bottom of the containing vessel. This substance has 

 been the subject of research by E. C. C. Stanford (loc. cit.), who 

 has termed it "Algin." The tests given for " Algin " by 

 Stanford were applied to the material, and many gave successful 

 results. The majority of them, however, are admittedly tests for 

 protein bodies, and the statements made by Stanford in his paper 

 upon the subject show that the substance is a mixture. Thinking 

 this I communicated with Dr. T. B. Osborne, of the Conn. 

 Agric. Expt. Station, who is of the same opinion. "Algin," 

 however (to retain Stanford's nomenclature), does contain one and 

 probably a number of proteins, one of which is a vegetable 

 globulin, for a solution of the same in a fairly dilute solution 

 (10 per cent.) of ammonium sulphate responded to the following 

 reactions — the Xanthoproteic, the Adamkiewicz and Molisch's 

 Reaction. It is hoped shortly to bring forward the results of 

 some further and more detailed obser^^ations upon this subject. 

 Regarding the sugars present in algag, the ozazones have been 

 prepared from that contained in Laminaria saccharina, both in 

 thin section of the plant, and from the extract of it with water 

 after the precipitation of lixiviated salts ; these are at present 

 under examination. When Laminaria digitata was digested 

 with sulphuric acid, the resulting liquid gave evidence of the 

 presence of a sugar ; probably this may have resulted from the 

 hydrolysis of the cellulose present. An ozazone was prepared 

 from this sugar, and its appearance under the microscope was 

 remarkably like that of glucosazone. The brown colouring 

 matter of the Fuci and Laminaria is phycophaein, and this may 



