THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTOKY. 



[FIFTH SERIES.] 

 No. 20. AUGUST 1879. 



X. — On the Mode of Growth of Stromatopora, including the 

 Commensalism of Caunopora. By H. J. Carter, F.R.S. 

 &c. 



Struck with" the practical nature of Mr. Champernowne's 

 remarks on " some Devonian Stromatoporidee from Darting- 

 ton, near Totnes," published in the Quart. Journ. Geol. Soc. 

 for February 1879, 1 lost no time in putting myself in communi- 

 cation with him on this subject, and having received, in reply, 

 a kind invitation to visit the "Pit-Park Quarry" (whence 

 his specimens had been taken) , I availed myself of the oppor- 

 tunity on the 8th of May last. 



During our inspection of the quarry, as well as during the 

 short time I was with Mr. Champernowne, I learnt no less 

 from the former than from the latter, whose cautious observa- 

 tions, combined with his opportunities of obtaining practical 

 information, rendered his remarks very valuable in a scientific 

 point of view. 



On my return to this place (Budleigh-Salterton) I washed 

 the specimens brought away from the Quarry, and dissected 

 them by fracture, section, and polishing, as far as such means 

 and such material would admit, whereby T learnt much more. 



My general inference from our visit to the Quarry was that 

 Htrornatojjora was essentially a "reef-building" organism, 

 and that, like Millcpora alcicornis in the West Indies, it grew 



Ann. & Mag. N. Hist. Ser. 5. Vol. iv. 8 



