ew forms troduced, a deflagration ensues, accompanied by the emis- of auxiliary or branch sewers, the latter having all the ad- sion of an exceedingly brilliant white light, which is main- vantages aimed at by Mr. Phillips in designing the sewers tained as long as any of the sulphur remains… … give illustrations, the follow- manganese. CROSS SECTIONS OF LONDON SEWERS. ing being the particulars of «« With respect to the actinic each ; value of the light, I find that from three to five seconds’ ex- making joints in pipe sewers. ‘‘ Where, from inadequate Fig. 1 isa section of two large…
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