^m^rmk,- XZ mm UNIVERSITY OF CALIFORNIA. Received.^. cZj^^C^. , i8?t,^^ Accessiivts ^o//:itSj^/ShelfNo. OS- MamLib. SUBMAIIINE MINES AND TORPEDOES AS APPLIED TO HARBOUR DEFENCE. SUBMARINE MINES AND TORPEDOES AS APPLIED TO HARBOUR DEFENCE. BY JOHN TOWNSEND BUCKNILL, HonoraryLieutenant-Colonel(Late MajorR.E.), ReserveofOfficers. Formerly (from 1873 to 1886) "R.E.SecretaryforExperiments;'^ "MemberandSecretary''^ofthe "-Joint War ''AssOifsfti.cIenasntrd"uAcStdeomcrirfreotaralrtSyyu"bCmooamfmrtiihtneteyeMedionn"inEgW,xa^pr^erSOicfmfhieoconeltsToofa7Mg-ipaleiidnotsatCroHym.EmMni.gtSitn.eeee'r;O^i^bnegr,onCh;'at"ham. SubmarineMiningOfficerat Woolwich. Ea'r'EsxoemceuttiivmeeOafcftiicenrgf"oIrnsSpuebcmtaorriSnuebmMairniinnegDienfetnhceesS"ouatthetrhenWDiastrricOtf.f'i'c''e; AUTHOR OF "torpedoes VERSUS HEAVY ARTILLERY," 1872, "PROTECTION OF BUILDINGS FROM LIGHTNING," 1S81, Reprinted and Revised from "Engineering." NEW YORK: JOHN WILEY & SONS, 15 AsTOR Place. LONDON: OFFICES OF "ENGINEERING," 35 & 36 BEDFORD ST. ^^