Dates of publication of tbe several parts contained in this volume 
Part 1. Pages 1-32 . July, 1890. 
,, 2. ,, 33-64 .. September, 1890. 
,, 3. ,, 65-96 ... December, 1890. 
,, 4. „ 97-128 .. . May, 1891. 
„ 5. „ 129-160 . October, 1891. 
,, 6. ,, 161-196 . ... December, 1891. 
,, 7. ,, ix-xl .. March, 1892. 
,, 8. ,, xli-lxx . June, 1892. 
,, 9. ,, i-viii, and 197-204 . July, 1892. 
Dates of completion of previous volumes: 
Transactions or the Watford Natural History Society. 
Yol. I. (pp. lxiv and 248) .' ' . August, 1878. 
,, II. (pp. lx and 260). . ..... June, 1880. 
Transactions of the Hertfordshire Natural History Society. 
Yol. I. (pp. lxviii and 272) ..... .. May, 1882. 
,, II. (pp. lxviii and 286) .. May, 1884. 
,, III. (pp. lxxii and 274) .. March, 1886. 
,, IY. (pp. lii and 224). . . June, 1888. 
„ "V. (pp. xlviii and 224) t *.. , ..... . May, 1890. 
