188 



HEroRT-1903. 



Beds (1) and (2) are detrital limestones, from which the following list 

 was collected : — 



ProdiutKS icmireticulatiis (full sized). 

 Product us undat us. 

 Sjiirifcri/ia octopltcata. 

 titro2)kflmcHa analoga. 

 Aviculajiecien disswiilis. 



sp. 

 Edmimdia sulcata. 



Cuatlwj/hyllum sp., abundant near top. 

 Arclucocidaris sp. 



Fciwstella sp., abundant in layers near top. 

 Athyrls amhigun. 

 Choiietes Bueliiaiia. 

 Product us ac uleatus. 

 ,, pltcatilis. 



The thin crystalline Limestone (7) weathers reddish-yellow, and from 

 its fossiliferous character it should constitute a good horizon for strati- 

 graphical work. The following list was obtained : — 



Crinoid. JiJiynchonella 2ficurod(m. 



Orthotctes crenistria. Edmondia sp. 



Productus jiu netatus (abundant). Parnllelodoh sp! 



„ tivabriculus. Bellerdplwii Vrei. 



„ sinuntus. MacroclMillm sp. 



No fossils were found in the shales (8), (9), and (10). 



The grey fireclay (11) contained a fair. abundance of rootlets, and in 

 the Freestone (12) ^tvjmaria ficoidrs was found. No fossils were seen 

 either in the thick deposit of shale (13) or its contained bullions. 



In Wensleydale the typical Yoredale Rocks were examined, and fo.ssils 

 were collected from the uninterrupted sections afforded by Mill Gill, 

 represented in fig. 3. 



The following is a statement of the fossils found in the various beds : — 



1. Cheity Limestone. Productus ffiffa/dcus {common'). 



2. Black shales. Productus giffantetis. 

 4. Strong calcareous shales. 



Product If s gifftinfcus {abivadani). 

 „ hmgisjnnus. 



0. Cherty Limestone. Productus gigantcvs 



10. Black shale. Productus semireticulatus. 



11. Limestone, the upper part is cherty; at the base is a layer crowded with 

 Lithostrotion, Sgringopor-a, and Cyathopligllum. 



14. Black siiale. Spirvrbis helicteres '.' ; and fragments of plant-remains in the 

 roof-layer of (15) coal. 

 If). Fireclay. Kootlets 



Fig. 3. 



ft. ill. 



Productus scmirvticulaiiis. 

 Sjyirifvra sp. (common). 



1. Clierty limestono . 



2. Black shale . 



3. Lime.stoiie 



4. Strong calciueous shales 



B. Limcftone 



G. Black shnle . 



7. Limestinie 



8. Black shale . 



n. Cherty limestone 

 10. Black shale . 



11. Limcstoue 



4 

 1 ?, 



3 



11 



' I y- 



lie Limestone. 



2 .1 

 G 



10 



