AM) OrnKK WOKK IN nKKTS. 107 



It may be said that, from a grologic stamlpoint, I ought to have 

 taken up the tale from 1883, to which year Mr. Hopkiiison gave us 

 a contimiation of Hertfordshire Geological Bibliography. Perhaps 

 to get over this gap and to save a breach of continuity, he may 

 some time add a geologic bibliography from 1883 to 1889, from 

 outside sources. I leave the matter in his hands, and at once go 

 on to 1890, so that we may get a fuller notion of what has been 

 done for us from that year until now. 



1890. 



In part ii of his paper on the "Westloton Beds, Sir J. PEESTWicri 

 referred to the probable range of that pebbly gravel into Hertford- 

 shire, * between Hatfield and Hertford Heath, at Bernard's Heath, 

 Collier's End, Sacombe Green, near Welwyn, at Ayot and Burnham 

 Green, Bennett's End, etc., all on high ground. 



Dr. F. H. Blaxall, in a Report to the Local Government Board, 

 remarked that ''the sewerage of the town [of Berkhamstcd] . . . 

 is of most defective character, giving rise to nuisances that are 

 everywhere prevalent," and adding, " nor is mischief from the 

 ])resent condition of the Berkhampstead sewers limited to the town 

 itself, for the stream empties into the canal at the east end of the 

 town, polluting its waters with foul and dangerous sewage." f 



This severe criticism of what is, let us hope, a past state of 

 things, is of value, as showing that there have been faults in 

 Hert fordshire, and that such faults are liable to be found out. 



1891. 



In a paper "On some Hill Gravels North of the Thames," 

 Mr. H. W. MoNCKTox and Mr. R. S. Herries refer to the Westleton 

 Beds in Hertfordshire, and describe sections in the Tertiary district 

 between Hatfield, Hertford, and Barnet, 'I which had not been 

 previously described. 



In the "Handbook of the London Geological Field Class" of 

 Prof. H. G. Seeley there is a note of an excursion to Boxmoor, 

 with chemical analyses of the Chalk Rock. § 



A very useful publication of this year was issued by the 

 Geologists' Association; "A Record of Excursions made Between 

 1860 and 1890," in which, will be found accounts of excursions 

 made before our Society was invented. Hertfordshii'c is treated of 

 on pp. 149-173. || 



* 'Quart. Joiu-n. Geol. Soc.,' vol. xlvi, pp. 137-139, 145, 149, 150, pi. vii ; 



and pi. viii (with part iii), 1890. 



t "Report .... upon an outbreak of Diphtheria at Berkhampstead." 

 Fol. London. 



X ' Proc. Geol. Assoc.,' vol. xii, pt. 4, pp. Ill, 112. 



§ 8vo. London, pp. 120, 121. 



II 8vo. London, pp. vii, 571. 



