1 66 BIBLIOGRAPHY OF YORKSHIRE GEOLOGY. 
68 Vine, G. R. — On the Carboniferous Polyzoa. Geol. Mag., 
dec. ii., vol. vii., pp. 501-512. 
69 Watts, W. — Geological Strata, and mode of procedure in 
driving a tunnel at Saddleworth. [Geology, p. 361]. 
Trans. Manchester Geol. Soc., vol. xv., pt. 16, pp. 352- 
365. 
70 Williamson, W. C. — On the Organization of the Fossil 
Plants of the Coal-Measures. Pt. 10, Including an 
Examination of the supposed Radiolarians of the Car- 
boniferous Rocks. [Halifax, p. 532]. Phil. Trans., 
vol. clxxi., pp. 493-539. 
71 — — On the Botanical Affinities of the Carboniferous 
Sigillariae. Rep. Brit. Assoc. for 1879, pp. 346-7. 
72 Wilson, E. — The Age of the Pennine Chain. [Letter in 
answer to Prof. Hull]. Geol. Mag., dec. ii., vol. vii., 
pp. 93-95. Also The Midland Naturalist, vol. iii., pp. 
1-4 ; and Rep. Brit. Assoc. for 1879 and 1880, pp. 343-4. 
73 Wood, S. V. — The Newer Pliocene Period in England. 
Quart. Journ. Geol. Soc, vol. xxxvi., pp. 457-528. 
74 Woodward, S. P. — Manual of the Mollusca ; or, Recent 
and Fossil Shells. Ed. 4. With an Appendix of Recent 
and Fossil Conchological Discoveries, by Ralph Tate. 
8vo. London. 
75 Wright, T. — Monograph of the British Fossil Echinoder- 
mata of the Oolitic Formations. Vol. ii., The Asteroidea 
and Ophiuroidea. [Ophiolepis leckenbyi, from Scar- 
borough, pp. 160, 161 ; O. murravii, from Staithes, pi. 
xix.]. Pp. i.-iv., 155-203 ; plates xix.-xxi. Monogr. Pal. 
Soc, vol. xxxiv., for the year 1880. [See 1863]. 
76 Monograph on the Lias Ammonites of the British 
Islands. Pt. 3, Classification. Pp. 165-264 ; plates 
xix.-xl. Monogr. Pal. Soc, vol. xxxiv., for the year 
1880. 
1881. 
1 Anon. — Middlesbrough and the District : being Notes 
Historical, Industrial and Scientific. [Geological Map]. 
12mo. Middlesbrough. 
2 ■ [signed A.D.H.L., See William Smith]. 
3 Reports of the Inspectors of Mines. Parliamentary 
Report. Fol. London. 
