I
givon without any grcnt cost or incorircnicnco to tho gas clopnrtnicnt.
Xr. \'ALTER asked wlietlicr it wns necessary to UBC sliocinlly dosigncd retorts whoro, ns in Gcnualiy, a liighor working prossurc wns niuintainctl in orcler to h h g tiown the percontogo of nitrogen in tho gns : ulvo wliother tho ortlinury fire-clny retorts could bit i~sc:tl i n the ~I!ovc ewe.
Jh. I).\viusos, in riqily, suit1 in tlio r o d ~I I R iiitlustry tho Iit.st rtrtirrii to bi: ol~tninrtl from orclinnry gcrs-coal wns II conversion of 25 per cctnt. of tho celorilic: vuho froni tho solid into gnseous forin. \Yith Irgurcl to prod~cer gtis 75 pur cent. could IN ol)tirinctl. Jt. liud been suggestrtl tlint towns sIioii1t1 Iiu supplictl with protluccr gus, rirtlier inn con1 gns, by ~C R E O I I of tho lowor cost, of ~i~otlnction. 'no iniportnnt consitlorution, howovor, wus the titwvy 1 s t of tlistriliiition, as Iiugo holders ant1 niiriiis wvero ocessnry for tlistributing producor guy. He \vus not \varo of n sntisfnctory calorinioter for irccuriitcly trsting roducor gas. A s to tho rotortn in nsc in C:crmnny ~Iioro a cornpnrntivc~ly high prcssuro wus ~iinintiii~ietl, lioy wcro of tho ordinnry firoclny typo, [is used in thin ountry, and tliorc ~vus Iioilni~ to i ~o i i cortnin lenkagir ito tho furnuco rind tlicrcforu loss of gns. Tho test for arlion inonoxitlo wns iotline Iicntositlo ; tliu ~inrticulars Noing given i n tho Journcrl of Gas Llgliting of June 22ntl. 909, p. 823. \'it11 rcfercnccr to street ligliting i n Uiriinrrhnrn 110 WUY rntlicr crslinmetl of it., with tliit cscuption f t h t in Victorirr S I ~I ~C . Tliuy \ v i w vitry inucli 1)oliintl bntinentrrl towns. I n Uerninny wlicro tlicrc wns n ~wi:r grndo gns iricnntlcsccnt lighting wns fur better. .'licrtt tlic orgirnisntion nnd ~uliurrisioii of tlic ligliting ~c r o suliorior, und the gns itself ti110\vcd grcntcr uniformity. 8'1icn tho new 24 in. innin WIIS lnitl iii Ilirmiiiglirrrn tlic ontrnl streets \r.oiiltl 110 ~iiiicli bettor liglitctl tliirn they vero to-day. On tho question of price, Sl~elticld, whicli intl IL lowor liguro tluin Uirminglinm, \vns fnrournbly ,ituiited, boing ncur tho coal niiiicu. Tlroy puid tlirco to our sliillings por ton loss for tlicir c o d tliirn tho Biriniiiginm Corpornt.ion. Tlioy woro n l ~o ablo to obtnin u groat, Ion1 of olicap slack. Slicffield wns not, Iioworcr tlw owost in prico rrltliougli i t was tho lowcst in the list of .hc t.wonty-four lnrgout towns. \'idnos siipplictl girs at 1s. por 1,000 0. ft.
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Parkinson irnd Cowan supply a vory siniplo m c c l i a n i s ~ whicli rccords nett value. Tlicso instruiiionts nro of immonso vnluo to tho gns-inunufaoturor ns tlioy promptly indicnto nny wnnt of uniformity in tho qunlity of tho pi mode, trnd this nffords opportunity of rectifying n tfcfect witliont tlolny. This is nll tho nioro iniportalit in these duys wliirn tlic! iuiifonnity of calorific VIIIIIC in