VI CONTENTS. 



PAGE 



15. Address. — The Mystery of Matter. Bv tlie President, 



John Morison, M.D., D.P.H., M.KC.S., F.G.S. . 173 



16. Notes on Berkliamsted Castle. By Duncan Mont- 



GOMERiE. (Plates VIII and IX, and Fig. 5.) . 195 



17. Notes on Lepidoptera observed in Hertfordshire in the 



year 1906. By A. E. Gibbs, F.L.S., F.E.S., F.E.H.S. 199 



18. Notes on Birds observed in Hertfordshire during the 



year 1906. By William Bickerton, F.Z.S., 

 M.B.O.U 205 



19. The Weather of the year 1906 in Hertfordshire. 



By John Hopkinson, F.L.S., F.R.Met. Soc, etc. 

 (Plate X, and Fig. 6.) 221 



20. Report on Phonological Phenomena observed in Hert- 



fordshire during the year 1906. By Edward 

 Mawley, F.R.Met. Soc, etc 241 



21. A Preliminary List of Hertfordshire Diptera. By A. E. 



GiBBs, F.L.S., F.E.S., and P. J. Barraud, F.E.S. . 249 



Index 277 



Proceedings, October, 1905, to Julv, 1907, pp. ix-lx. 

 (Plates VII and XI.) 



[To be inserted, in binding, before the Transactions.] 



