150 BEPORT — 1869. 



the pig, but allowing for the waste upon it at the ratio of 60 lbs. per ton, is 

 £2 4s. per ton, or £2 15s. in crude steel cakes ; the cost of making it into. 

 " steel-iron " bars, from the pig-iron, is £S 10s. per ton for finished bars, and 

 the cost of making tilted cast-steel bars, from the pig-iron, is ^12 15s. 

 per ton. We have seen the invoices of cast^steel bars of this sort, sold from 

 Langley Mills, at prices equal to those now current at Sheffield for well re- 

 puted cast steel made by the process of cementation." 



Second Report on the British Fossil Corals. 

 Bij Dr. P. Maktin Duncan, F.R.S., F. ^ Sec. Geol. Soc. 



This Report comprehends the description of the Coi'al-faima of the periods 

 when the strata of the Gault, Lower Greensand, Portland Oolite, Coral Rag, 

 Great Oolite, and Inferior OoKte were deposited. It contains a general view 

 of the physico-geographical conditions of the British area during the Tertiary 

 and Secondary periods so far as relates to coral growth, and also an enumera- 

 tion and a list of the species. 



The result of the labour entailed by the study of the Tertiary and Secondary 

 British FossQ corals has been to add 146 species and many varieties to the 

 111 or 112 previously known. 



Since the last Report was read, the fossil Corals of the Upper and Lower 

 Red Chalk and of the Upper Greensand have been published in my mono- 

 graph for the Palaeontographical Society. 



Much progress has been made in the Report on the Palaeozoic Corals, but 

 the Report itself cannot be completed for some time. 



Corals from the Gault. 

 Only six well-marked species of corals were known to MM. Milne-Edwards 

 and Jules Haime as having been found in the Gault. They were all simple 

 or solitary forms, and such as one woiild expect to find in moderately deep 

 water. It is evident that the area occupied by the English Gault was not the 

 coral tract of the period. The resemblance of the coral-faunas of the Gault 

 and the London Clay is somewhat remarkable, and probably the physical 

 conditions of the areas during the deposition of the strata were not very 

 dissimilar. 



MADBEPORAEIA APOROSA. 



Family TURBINOLID^. 



Subfamily Caetophtllin^. 



Division Caetophtlliacks. 



Genus Caetophyllia. 



MM. Milne-Edwards and Jules Haime have changed the generic term 

 Cyathina into that of its predecessor Caryophyllia ; consequently Cyathina 

 Boiverhanhi, Ed. & H., is now called Cari/ophyllia Bowerbanli, Ed. & H. 

 (Hist. Nat. dcs Corall. vol. ii. p. 18). 



Avery interesting variety of this species is in the Rev. T. Wiltshire's Col- 

 lection, and has its costas running obliquely to the long axis of the coraUum. 

 They are profusolj- granulated. 



