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Red.........

Waste Products, by P. L. Sim. monds (Review)..

254 The Application of, by W. Crookes..

58 Water-Pipes, Soldering of Full ., 409

Power, applied to Machinery

144 Welsh Gold

123 West Kent Natural History and Microscope Society

536 “ Will-o'-the-Wisp"

110 Wolfram, Action of, on Cast Iron 570 Wolfram, Effects of, on Steel.... 288 Wood, Preservation of...... 529

Woods of Commerce, by P. L.
Simmonds

345 Worm of our Rivers, the Common

10 Writing, Microscopic

121 YORKSHIRE, Botany of North.... 267 Yorkshire Philosophical Society.. 90 ZINC.

123, 572 Zoology at British Association, Cambridge .

243 Zoology at Exhibition, by C. Col. lingwood....

168 Zoology, Summary.. 133, 297, 447, 579

COX AND WYMAN, PRINTERS, GREAT QUEEN STREET, LONDON.

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