๐”– Bobbio Scriptorium
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On the aluminoferric process of sewage treatment

โœ Scribed by Sisson, G.


Publisher
Wiley (John Wiley & Sons)
Year
1892
Weight
132 KB
Volume
11
Category
Article
ISSN
0368-4075

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โœฆ Synopsis


\'hen enrefully used tlio mnchine is nccurnto 'to within 3 per cent.

The nbovc trinls were repented, but ~h e u the ice h~rd cvnponited--whicli genernlly took threc to four hours n t -3' C. to -.I' C:., the clotli V'M dipped in muter and hung out I I &I, this Iieing relicnted four tirrles, miking the totnl tirnc tkc cloth wns frozen about 1G hours. The strength of both qiinlities of cloth ivns ulso found in this cnw to be 'I uiil to tlic on'ginul cloth.

' ll:roiu t l w c triuls it isevictelit that cotton is not '1 tcnt1crct1" by the freezing of wnter within it, nt m y nito not when in tlic opcu width.

If tlic fibres wcrc bound or held in position to II greater or lesser crtcnt, sue11 ns olitaiiis in the cnsc of the pieecs iieiir the bottom of n \vnggou-lond of cloth ivhen frozen, probnbly the clotli niiglit be wcnkeucd ~ncchniiicrilly liy the crystullisntiou of tllc Writer, hut, Ii~thollgh 1 hrivc Ollly nlude R few trinls iu this dircction still they iiidiciitc tliiit tlie cloth is practicnllg uninjured.

'l'lie prcviriling opinion tliiit cloth is wenkeiied when it is frozen hus no doubt nrisen from tlie fnct thnt \vlicn the filires lire frozen stiff they nrc easily snnppetl ; but nny stiffening body, such as piini, h., will Iiiivc the sninc cffcct, an11 this ]ins olivioiisly nothing whetever to do with tlia nctuul strength of the fibre.

A. Alllruscn.


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