1902-1903.] 



Ill 



enquiry; it clearly demonstrates that the process of floating 

 cannot be relied on for proving the non-existence of Forami- 

 nifera in Boulder Clay. 



Table showing the number of Foraminifera in one ounce 

 Troy of Boulder Clay from Woodburn, near Carrickfergus, 

 examined exhaustively by the process of floating : — 



Floatin;^-. 



1st 



Specimens. 



.. 1400 



Floating. 



14th 



Specimens 



5 



2nd 



166 



15th 



11 



3rd 



106 



16th 



11 



4th 



85 



17 th 



7 



5th 



68 



18th 



3 



6th 



41 



19th 



8 



7th 



22 



20th 



18 



8th 



17 



21st 



6 



9th 



6 



22nd 



1 



10th 



12 



23rd 



2 



11th 



11 



24th 



o 



12th 



17 



25th ' 



1 



13th 



6 



26th 







Total, 2032 

 Residue examined under microscope yielded 67 speci- 

 mens. 



Boulder Clay, Woodburn, Carrickfergus, weight of clay 

 22 lbs. troy. Foraminifera in great profusion. 



FORAMINIFERA. 



Biloculina irregularis, d'Orb. — Rare. 

 B. ringens (Lamk.). — Frequent. 

 Miliolina tricar inata (d'Orb.). — Rare. 

 M. ohlonga (Montag.). — Rare. 



M. seminulum (Linne). — Very common, specimens large. 

 M. contorta (d'Orb.). — Very rare. 

 M. suhrotunda (Montag.). — Common. 

 M. tenuis (Cz.). — One specimen. 



Oyhthalrmdium inconstans, var. carinatum, B. & W. — Very 

 rare. 



