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of underground ducts and 10,160 chains of underground cable containing 39,381 miles of wire ; the erection of 5,260 chains of overhead cable containing 5,918 miles of wire ; and the erection of 747 miles of pole-line and 7,333 miles of open wire. In addition, £51,568 was expended in renewing or replacing plant and equipment which had become worn out, inadequate, or obsolete.

EXTENSIONS TO CABLING AND SWITCHING SYSTEMS. The table below shows the exchanges at which extensions to the cabling and switching systems were completed during the year, as well as particulars of the extensions made.

Additions to Cabling Plant. Additions to Switching Equipment. Name of Exchange. Underground Underground Overhead Miles of Exclusive Party-line Equipment. Ducts Cable Cable Cable Wire Line added. added. added. involved. Equipment. Tw0 . party . I Four-party. Auckland Engineering District— Chains. Chains. Chains. Units. Units. 1 Units. Aria .. .. .. .. 60 .. 37 .. .. , Auckland .. .. .. 461J 1,654 302J 8,751 Avondale .. .. .. .. 14 .. 35 .. Cambridge .. .. .. .. \ .. J .. .... Clevedon .. .. .. .. 4 .. 3 .. .. Devonport .. .. .. .. .. .. .. i 40 100 Hamilton .. .. .. .. 308 128 295 100 100 Helensville .. .. .. .. 54 .. 92 .. .. I .. Henderson .. .. .. .. 107J 237 449 .. .. j Herekino .. .. .. .. 5f .. 7 Hikurangi .. .. .. .. 56 .. 83 Howick .. .. .. .. .. .. .. 50 Manurewa .. .. .. .. 12 .. 6 Matamata .. .. .. .. .. 2 15 .. ! Ngaruawahia.. .. .. .. 10 .. 6 .. .. .. Ngatea .. .. .. .. 11£ .. 16 .. j Ohaupo .. .. .. .. 216 .. 230 Ohura .. .. .. .. 42J .. 28 .. j Ongarue .. .. .. .. 5 .. 3 .. .... Otahuhu .. .. .. .. .. 2 £ .. Otorohanga .. .. .. .. 274J .. 313 .. .. ! Paeroa .. .. .. .. .. 5 3 .. j Papakura .. .. .. .. 4 .. 11 Papatoetoe .. .. .. .. 41f .. 28 100 Piopio .. .. .. .. 114 .. 71 Putaruru .. .. .. .. .. .. .. 75 Tauranga .. .. .. ... .. .. .. 100 Xe Akau .. .. .. ., 2 .. 1 TeKuiti .. .. .. .. .. 179 111 TePuke .. .. .. .. 2 .. 2 100 Towai .. .. .. .. i .. £ Turua .. .. .. .. 3 j .. 2 Waipu .. .. .. .. 3 .. 1 Waitakaruru ... .. .. .. 50£ 1 Waiuku .. .. .. .. 29 2 34 90 Wellsford .. .. .. .. 11J .. 12 Whakatane .. .. .. .. 470 .. 1,040 Whangarei .. .. .. .. 2J .. 2 50 Wellington Engineering District — Blenheim .. .. .. .. 47£ 321£ 748 100 Collingwood .. .. .. .. 13£ .. 25 Feilding .. .. .. .. 3 .. 3 140 Poxton .. .. .. .. .. 1| 1 Gisborne. .. .. .. .. 202 233 2,154 40 Hastings .. .. .. ■. 10£ 32 24 90 .... Hawera .. .. .. 160 67£ 72 525 .. .. Kaponga .. .. .. .. 1| .. 5 100 • • » Kelburn .. .. .. >. .. .. • • 400 Lower Hutt .. .. .. 37 72 58 200 200 Marton .. .. .. .. 79 61 620 .. Masterton .. .. .. .. .. .. .. 200 Miramar .. .. .. .. .. .. . ■ 200 Napier .. .. .. .. . • 59J 62 Nelson .. .. .. .. .. • • ■ • 450 New Plymouth .. .. .. .. 70J 103 Nuhaka .. .. .. .. 4J 92 86 Okato.. .. .. .. .. . ■ •• •• 10 Otane .. .. .. .. 58 .. 72 Palmerston North .. .. .. 17J 162 705 200 Plimmerton .. .. .. .. .. .. •. 20 Rai Valley .. .. .. .. .. ■ • • • 10 Richmond .. .. .. .. .. •. • • 50 .. Taradale .. .. .. .. 5| 58 55 Tolaga Bay .. .. .. .. 109J .. 130 .. .. Waipukurau .. .. .. .. 1 .. 7 Wanganui .. .. .. 8 110 149 Waverley .. .. .. .. 5f .. 20 Wellington .. .. .. 101£ 8,550 Wellington South .. .. .. .. .. • • 100