GIKVANELLA IN OOLITIC EOCKS. 283 



than that of Girvanella incrustans ; the tubuli also anastomose 

 greatly : the little tubiili are sometimes filled with calcite, at other 

 times with calcareous mud. 



E-ev. H. H. WiNWooD congratulated the Author and the West of 

 England on this piece of work. Stoddart, after examination, had 

 failed to discover any organisms. He referred to Mr. AVethered's 

 happy knack of discovery. 



The Author said that he prepared his own slides, and that in 

 some cases it was a mistake to mount them in Canada balsam, as 

 its high refractive power obliterated the structure. Possibly it was 

 for this reason that Dr. Hinde had not observed the structure of 

 Girvanella to the extent he, the Author, had done in oolitic granules. 

 Those Fellows who had seen his slides agreed with him that the 

 GirvaneUa-^tiMctwie was organic, but those who had not seen them 

 doubted it; clearly those who had seen the slides were the best 

 judges. To Dr. Hicks he replied that the walls were not formed 

 of calcite ; quite the contrary, it was only the interior of the 

 tubules which contained it as an infilling mineral. The discovery 

 made by Prof. Judd in recent oolite from the Bahamas was most 

 important ; and as the tubules were branching he suggested the 

 possibility of their being allied to Syrinijammina fragilissima. 



As to Dr. Evans's remarks, half an hour's examination of the 

 actual slides would convince him that he was mistaken in the 

 views he had expressed. The Author thanked the Eellows who 

 had discussed his paper. 



