:294 JJK. E. HOLLAND ON" NUMMULITES FROM [Aug. I9O4, 



specimens have been examined, but it does not occur in profusion 

 in the rock. 



5 & 6. Two very small nummulites, about 3 or 4 mm. in width. 

 These occur in the rocks in great profusion, but they are very 

 difficult to deal with, because of their minute size and crystalline 

 condition. It has not been found possible hitherto to obtain good 

 split specimens. Several have been ground down and then varnished, 

 but they have not furnished results such as to justify the identifica- 

 tion of the species. It is thought that there are two forms — one 

 microspheric and one megalospheric ; and roughly thej* resemble 

 N. variolaria, Sowerby, 1 and JV. Heberti, D'Archiac. 2 



All these nummulites are highly crystalline. Nos. 2 & 4 split 

 readily under the usual treatment, though the process spoils nearly 

 50 per cent, of the specimens operated upon. When they are split 

 the crystalline condition entirely masks the internal structure, but 

 this is fairly well brought out by the use of a varnish of Canada 

 balsam dissolved in benzol. Nos. 1 & 3 split with very great 

 difficulty, and, in fact, to obtain the spiral characters of IVo. 3 it has 

 been necessary to grind a specimen down to the median plane and 

 then use varnish. In spite of the intractable nature of the speci- 

 mens, Mr. H. W. Burrows, F.G.S., has kindly attempted to get some 

 micro-photographs ; and he has succeeded (by the use of the acetylene- 

 light) in securing from opaque varnished specimens results which are 

 highly satisfactory in the circumstances. 



Associated with the nummulites in the rocks are numerous 

 Orbitoides. It has not yet been found possible to separate out any 

 good specimens, but a transparent section of the ' black ' rock shows 

 a few of the chambers of the median plane in one of the Orbitoides. 

 These chambers are clearly rectangular, and the Orbitoides are 

 Biscocyclines. It is probable that the species Orbitoides (Disco- 

 cyclina) papyracea and 0. (D.) dispansa both occur. 



Other Xummulitic rocks from the neighbourhood of Mount Elias 

 have also been examined. Some of them contain nummulites and 

 Orbitoides in outward appearance not unlike those from Vernitza, 

 but it has not been found practicable to isolate specimens good 

 enough and numerous enough to examine them properly for 

 purposes of identification. 



Three transparent slides cut from the rocks of Mount Elias have 

 been examined. These contain, in addition to Nummulites and 

 Orbitoides, Orbitolites (probably 0. complanata), Alveolina (near 

 A. oblonga), numerous Textilarice, Biloculina, Polymorphism, Milio- 

 lina, and several Globigerine and Rotaline forms. 



1 Thomas Brown, ' Illustrations of the Fossil Conchology of Great Britain ' 

 1849, p. 37 & pi. xxvi, figs. 3-5; and D'Archiac & Haime, 'Description des 

 Animaux fossiles du Groupe Nummulitique de l'lnde' 1853, p. 146 & pi. ix, 

 figs. ISa-lSg. 



2 D'Archiac & Haime, op. cit. p. 147 & pi. ix, figs. 14<x-14#, 15, & 15 a. 



