The Hertfordshire Naturalist 2019 was mailed to members in September 2019.  It includes articles on:

Bringing back the Bulbourne

Did we bring back the Bulbourne?

Chalk mine / bat hibernaculum at Pinks Cottages

The arrival of the Demon Shrimp in Hertfordshire

Please note that the wrong volume number is given on the front cover of this issue. The reference (correctly shown on the inside pages) should be: Transactions of the Hertfordshire Natural History Society, Volume 51, Part 1, September 2019, ISSN 0375 3409