300 



was expressed, would change, per se, into cane sugar, it was a 

 most important discovery ; for no chemist or practical operator 

 had ever attained such a result. Dr. Jackson was aware that 

 starch changes into dextrine, then into grape sugar, and lastly 

 into cane sugar, in the living organism of the plant, and that 

 some of these changes could be effected by chemical art, but thus 

 far no one had ever known grape to change into cane sugar^ut of 

 the living organisms, though the contrary operation was not un- 

 common, namely, the conversion of cane sugar into glucose, or 

 even mannite. 



Up to this time we are not aware that any authority states 

 that glucose can, by the action of any salts, be changed into 

 cane sugar. 



He remarked that the term cane sugar was not restricted to a 

 species, but to a group or family, having a rhombic prism for 

 the primary form, and that there was undoubtedly some slight 

 difference to be found in the dimensions of their crystalline an- 

 gles, all of which, however, fall within the limits of the general 

 form known as that of cane sugar, and are incompatible with 

 grape sugar, which belongs to the cubic system. The sugar of 

 the ripe sorghum has the crystalline form, and all the physical 

 and chemical properties of cane sugar, and cannot be classed 

 with any other. It exists ready formed in the cells of the plant, 

 and may be seen by aid of the microscope in them when the 

 plant is dried rapidly. It is obtained immediately on expression 

 of a few drops of the juice upon a plate of glass, on which per- 

 fect crystals of cane sugar are seen by the microscope. 



Dr. David F. Weinland made some extended remarks 

 upon the Parasites of man, giving an account of their 

 early history, from the time of Aristotle to the present 

 day. 



After alluding to the two genera of Tapeworms described by 

 Bremser, and a third genus, a species of which has been described 

 by Kuchenmeister, Dr. Weinland announced the discovery of a 

 fourth genus, which he names Acanthotrias (three rows of hooks). 

 Thus far he had seen it only in the cysticercus stage. It has 

 fourteen hooks in each of the three rows, the uppermost row being 



