236 Intelligence and Miscellaneous Articles. 



of chloride of iodine with potash; it is a crystalline double com- 

 pound, which being separated and crystallized, gives the bi-iodate 

 of potash. 



The other iodate results from the action of one of the following 

 acids on the neutral iodate of potash : — the sulphuric, nitric, phos- 

 phoric, muriatic, and silicated fluoric ; or it may be obtained di- 

 rectly by treating a great excess of iodic acid with potash. 



During the incomplete saturation of chloride of iodine by potash, 

 a double compound is formed of chloride of potassium and acidulous 

 iodate of potash, in definite proportions. 



No such compounds as acidulous iodate or chloro-iodate of soda 

 exist. Davy's process of obtaining iodic acid by the oxide of chlo- 

 rine and iodine may be advantageously replaced, by that of preci- 

 pitating the soda from the iodate by means of silicated fluoric acid. 



M. Serullas has also discovered a process by which iodic acid is 

 obtained abundantly and well crystallized. It consists in treating a 

 solution of iodate of soda with an excess of sulphuric acid. The 

 mixture left to spontaneous evaporation gives in a short time pure 

 crystals of iodic acid. The sulphate of potash formed and the 

 excess of sulphuric acid remain in solution. M. Serullas concludes 

 from his researches, thai the double acids designated by Davy iodo- 

 sulphuric, iodo-nitric and iodo -phosphoric, do not exist ; and he 

 attributes Davy's mistake to the small quantity of materials which 

 he employed in his experiments, and their being made only once. — 



Ibid. 



MANUFACTURE OF PAPER FROM ULVA MARINA. 

 Specification of a Patent for manufacturing Paper from a material 



not heretofore vsed for that purpose. Granted to Elisha Hayden 



Collier, uf London, but late of Plymouth County, Massachusetts, 



AprU l.T, 1828. 



The following is the description of my mode of manufacturing 

 paper from a marine production, or sea grass, designated by botan- 

 ists, as " Ulva marina." 



First : all rock, roots, and shells, to be carefully separated from it. 



Secondly : the dust to be cleared from it, by beating it. 



Thirdly : to be steeped in lime-water, in order to discharge the salt 

 from it, and thus prevent decomposition. 



Fourthly : to be partially pulverized. (It can be bleached perfectly 

 white by the use of oxymuriate of lime, otherwise called chalonic acid) 

 [chloride of lime]. 



Fifthly : to be made into pulp in the usual manner, either by beating, 

 or in a paper engine. 



Sixthly : to be dipped, pressed, sized, and dried in the usual way. 



As the sea-grass, or Ulva marina, is capable of being manufactured 

 into paper by other modes than that above described, I claim as my 

 invention, the manufacture of paper from the said sea-grass, or Ulva 

 marina, not by any particular mode, but by any process whatever 

 which it may undergo ; and whether such paper is composed entirely 

 of the said sea-grass, or Ulva marina, or mixed in any proportion with 

 other materials heretofore known, or used for the manufacture of 

 paper. — E. H. Collier. — Jourii. of Franklin Institute, vol. iv. 



