Dates of publication of the several parts contaiued in this volume 



Dates of publication of previous volumes : 



Transactions of the Watford Natural History Society. 

 Vol. I. (pp. Ixiv and 248) August, 1878. 



Vol. II. (pp. Ix and 260) June, 1880. 



Transactions of the Hertfordshire Natural History Society. 

 Vol. I. (pp. Ixviii and 272) May, 1882. 



