P.—l.

Table 6.— (a) Tests of Stone completed during the Year, binding 31st March, 1928.

(b) Abrasion Tests of Gravels completed during the Year ending 31st March, 1928.

By Authority : W. A. G. Skinner, Government Printer, Wellington.—l92B.

154

it \ i i\ ATjrasion - l≤ »« — — i I Locality. §§3 s j jag -5 i^eologloal-ClasslHcntion. _____ $ ft: I § = s * 111. Eosking's Hill, Hutt Koad, near 164 (KS2 5-1 7-8 19-46 14 Crushed greywaeke cemented Ngahauranga with quartz. 112. Eosking's Hill, Hutt Road, near 165 .. •• .. .. 8 Quartz with little crasher! Ngahauranga, Blook 15 greywacke. 113. Dubi's quarry-faoe, Tβ Arai 147-7 3-21 14-8 i 2-70 5-6 6 Sandstone. Riding — Rodney County Council 114. Sohedewy'a Hill, Warkworth — 147 5-35 12-6 j 3-18 4-2 4 Sandstone. Rodney County Council: Allotment 148, Mahurangi, Block XV (Surface) 115. Mount Brame Quarry, Kokako, 166 1-26 4-2 ; 9-82 L8-6 8 Altered basalt. Rodney County Council: Allotment portion N 155 (Quarryfaoe) 116. Mount Brame Quarry, Kokako, j 163-5 1-25 6-6 (5-0(> .. .. Weathered altered basalt. Rodney County Council: Allotment portion N 155 11.7. Ryan's quarry, Allotment 52 - 153 1-45 6-44 6-2 15-2 6 Altered basalt. Rodney County Council: Oruawhero Parish, Block IV. Pahiri 118. Huntly Town Board .. .. 106-5 0-18 3-9 10-25 18-85 24 Greywaoke. 119. Rotorua .. .. .. 147-5 0-167 28-9 1-38 .. .. Obsidian. 120. Herekino, Section 2a, Blook III J 165-4 0-21 3-15 12-68 .. .. Altered greywackc. __ . |

I,,,..,i;f v Percentage French l '" l,l " ty - of Wear. Coefficient. 1. Waingawa River — Masterton .. .. -. ■• •• .. .. 5-24 7-6 2. Hutfc Bridge - Akatarawa Road .. .. •. •. • ■ .. .. 10-8 3 7 3. Mangatainoka-Pahiatua .. .. .. .. .. ■. .. .. 7-73 5 2 i Pahuratahi Stream - Kaitoke .. .. .. . . . . . . .. 17-86 2 2 0, Tauherenikau Lower Bridge - Martinbcrough .. .. .. .. .. 7-4,8 f> 1 6. Morgan's pit .. .'. .. .. .. .. .. ... .. 19-01 2-1 7. Otaki River Terraoe, 20 ft. .. .. •• .. •. .. .. 7-38 0-4 8. Marton-Tutaekuri .. .. .. .. .. .. .. .. 9-1 4-4 9. Waikanae River terraoe, 20 ft. .. .. .. .. .. .. .. 8-5 4-7 10. Rangitikei River, Mail's terraoe, 20 ft. •• •• ■• •• ■• .. 4-4 9-1 11. Rangitikei River, Bulls .. .. .. .. .. .. .. .. 2-(i 15-4 12. Rangitikei River, Mair's .. .. .. .. . . . . .. .. 2-8 14-3 13. Rangitikei River, Bulls terraoe, 30 ft. .. .. .. .. .. .. 6-7 6-0 14. Ohau River Bridge .. .. .. .. .. .. .. .. 6-9 5-8 16. Oroua River, Feuding .. • • •. . • • • • • •. •. 0-4 4-3 16. Mauawatu River, below Gorge .. .. .. .. .. .. .. 12-0 8-8 17. Wangaehu River Bridge (volcanic gravel) .. .. .. .. .. .. !)•() 4-4 18. Waikare River, White's Road, Putaruru .. .. .. '.. .. .. 39-8 1-0 19. Waikato River, Bent's pit, Arapuni .. .. •. .. .. .. (i-7 6-0 20. Tukituki River, Napier, right bank, Olive Grange, Bridge .. .. .. .. 5-0 8-0 Samples of shingle ex Morris ,T. Belcliei , , shingle-merchants, Otorohanga— 2!. Sample 1 ... .. •• •• •■ •• •■ ■• •■ 15-7 2-5 22. Sample. 2 .. .. ., •. .. .. •. .. 15-5 2-6 23. Sample 3 .. .. .. .. .. ■ • • • • • • • 14-0 2-9 24. Taihape River, Matapiro, Hawkc's Bay (Pliocene marine gravel) .. .. .. 3-7 10-8 25. Mohaka River, left bank, three miles below bridge .. .. . . .. .. 3-8 10-5 26. Wairoa- River, dredged from bed, two miles up-stream, Wairoa .. .. .. 11-8 3-4 27. Waikoau Viaduot (gravel from quarry near) .. .. .. .. .. 12-7 .'M 28. Mohaka River, upper terraoe, right bank, from pit .. .. .. .. .. 8-(i 4-7 29. Redoliff-Taradale •• ■• ■• •• •• •• •• •• 15-6 2-6 30. Hutt River Bridge - Akatarawa Road .. .. .. .. .. .. 10-8 3-7 31. Mangatainoka-Pahiatua .. .. .. • ■ .. ■ ■ .. .. 7-7 5-2 32. Makakahi River .. .. .. .. .. .'. .. -. 15-95 2-5 33. Mangahao River .. .. .. •• .. .. .. .. 9-85 4 1 34. Ruamahanga, Martinborough .. .. .. .. .. .. .. 2-35 17-0 35. Ruamahanga, Masterton .. .. .. .. •. .. .. 2-6 15-4 36. Mangatainoka River .. .. .., .. •• ■• .. .. 3-94 10-2 37. Ruamahanga, Lower Bridge .. .. .. .. .. . . .. 7-95 5-0 38. WaioWne Bridge - Greytowu .. .. .. .. .. .. .. 5-01 8-0