James Saunders — Geology of S. Bedfordshire. 11.9 



Mr. Jakes-Browne, F.G.S., who has been most indefatigable in 

 naming the fossils, and otherwise assisting with his extensive 

 knowledge of their distribution, has in correspondence with me 

 made certain comments on some of the specimens submitted to 

 him, which will pi-obably be of general interest. In a letter 

 dated January 30th, 1887, he says : " There are several interesting 

 specimens, among them the Turrilite being especially so, as it 

 belongs to a species which has only yet been found in the south of 

 England, Turrilites Mantelli." In another letter received shortly 

 before, occurs the following extract: "The larger specimen (Belem- 

 nite) from Chalton is, I consider, a new species, and I am particu- 

 larly pleased to have seen your specimen, because all I have seen 

 before from the Totternhoe Stone were smaller, so that I was not 

 sure whether it was a new species, or the young of Belemnitella 

 plena. The fact of yours being larger, and still retaining the 

 character of being the same width from top to centre, confirms my 

 notion of its being an undescribed species. 1 Of the Brachiopoda 

 from this cutting some prevalent forms are Terebratula semiglobosa 

 and Rhynchonella Martini." 



The same bed has also furnished two interesting specimens of a 

 rare Crustacean, Pala-ga Carteri, H. Woodward, one of which was 

 from the lower portion of the Chalk Marl, where it is bluish-grey, 

 and the other from the higher part, which is distinguished as 

 the Totternhoe Stone. The latter specimen possesses the caudal 

 appendages by which Dr. H. Woodward was enabled to determine 

 the affinities of the species, and which that gentleman has described 

 and figured in the Geol. Mag. 1870. It was hoped that during 

 the progress of the excavations now being made in this cutting for 

 the widening of the Midland line, additional examples of this inter- 

 esting species would be brought to light, but at present these hopes 

 are unrealized. 



The following sections were observed at Chalton, Aug. 25th, 1889. 



North-east end of pit of the Lime Works. 



Soil ... ... ... ... 1 foot. 



Lower Chalk ... ... ... ... about 20 feet 



South-west end of pit of the Lime Works. 



Totternhoe Stone, above which the soil had been removed 2 feet 

 Clayey Chalk ... ... ... ... £ foot 



Chalk Marl ... ... ... ... 14 feet 



Section in the cutting a few rods further south, close to the bridge. 



Earthy Clay ... ... ... ... 3 feet 



Chalk ... ... ... ... ... 5 „ 



Totternhoe Stone ... .. ... ... 2 „ 



Chalk Marl ... ... ... about 33 „ 



Total at this the deepest part of the cutting, about 43 ,, 



The Totternhoe Stone is a marked feature at the northern portion 



1 Under date Jan. 21, 1890, Mr. Jukes-Browne expresses the opinion that the 

 Selenmite is probably that figured by Sowerby (Min. Conch, pi. 600) under the 

 name of Belemnites lauctolatus. 



