Correspondence — H. H. Horvorth. 



239 



JSFodosaria (D.) pauper ata, d'Orb. 



Specimens not typical, v.r. 

 JV. (B.) consobrina, d'Orb. r. 

 N. farcimen (Sold.), v.r. 

 N. {D.) communis, d'Orb. r. 

 N. (Z>.) Roemeri, Neug. v.r. 

 N. (Z>.) mKcronata, Neug. v.r. 

 N. comata (Batsch). Slender form. v.r. 

 -N. raplianus (Linne). v.r. 

 Lingtcl'ma carinata, d'Orb. Variety with 



segments slightly compressed, v.r. 

 Mhahclogonium tricarinatum (d'Orb.). 



Broken specimens, r. 

 It. Budensis (Hantk.). c. 

 R. globuliferum, Rss. v.r. 

 Marginulina Wetherellii, Jones, v.r. 



Vaginulina legumen (Linne). r. 



V. linearis (Montagu). One specimen. 



V. arguta, Rss. r. 



V. harpa, Roem. c. 



V. striata, d'Orb. r. 



V. marginuloides, Rss. One specimen. 



V. recta, Rss. v.r. 



'Cristellaria rotulata (Montf.). v.c. 



G. gibba, d'Orb. c. 



4, Alfred Street, Belfast. 

 April l\th, 1905. 



Cristellaria crepidula (F. & M.). c. 



0. lata (Cornuel). One specimen. 



G. ensis (Rss.). r. 



C Italica (Defr.). v.r. 



C Schloenbachi, Rss. v.r. 



G. acutauricularis (F. &. M.). v.r. 



C. sulcifera, Rss. r. 



G. subalata, Rss. r. 



Flahellina rugosa, d'Orb. Some of the 



specimens are very fine. c. 

 Polymorphina communis, d'Orb. One 



specimen. 

 P. lanceolata, Rss. Specimens in poor 



condition, r. 

 P. sororia, Rss. One fistulose form. 

 P. regina, B., P., & J. One broken 



specimen. 

 Ramulina globulifera, Brady, c. 

 Vitrowebbina irregularis (d'Orb.). v.r. 

 Spirillina margaritifera. Will. v.c. 

 Patellina corrtigata, "Will. c. 

 Discorbina orbicitlaris (Terq.). Specimens 



intermediate between I), orbicularis 



and D. globularis. c. 

 Rotalia orbicular is, d^Ovh. One specimen. 



Joseph Wright. 



THE FORMATION OF CIRQUES. 



Sir, — Will you kindly give me a little space in which to correct 

 a mistake I have made on p. 437 of vol. i of my new book, in which 

 I have done a double injustice, one to my friend Professor Bonney 

 and the other to myself. 



In discussing the theory of the ice excavation of cirques I mention 

 him as a champion of the notion, whereas, as is perfectly plain from 

 'his writings, he opposes that theory, so that he is on my side entirely 

 instead of against me on this point. 



The fact is the reference to Professor Bonney ought to have been 

 inserted in an earlier chapter and in reference to the aqueous erosion 

 of cirques, a view he does endorse, while I feel obliged to side with 

 Falsan and the other French geologists who have studied the great 

 cirques of the Pyrenees and attribute them to deformations and 

 otherwise original structural features imposed on the upper Alpine 

 and other valleys at the time the contour of the mountain ranges 

 was first given to them. As it is my practice always to correct my 

 errors when they have been pointed out, I take the first opportunity 

 of putting this small slip right, and it is particularly pleasant to me 

 since I gain a powerful friend to my side of the argument by 

 doing so. Henry H. Howorth. 



30, COLLESTGHAM PlACE, 



Cromwell Road, S.W. 

 April nth, 1905. 



