>ll 



M» peiveptibly in nuiiiljcrs as tlie water tKr]'ciis lo liH) failidins 

 and ln'Iow. There is ii reiiKirkablo iibsciiec ol' .Miliiiis in ilio 

 cstuarino parts ol' (lie Gull", wliicli .strongly contracts willi tlicir 

 alniudaiice in Caspr Uay, and also on the Atlantic (-(^ast of Ndva 

 Scotia, and south. 



One specimen of a curious sandy form ol' Ciirnu,-[ilra li.iiacea 

 was ol)taineJ at a depth of 18 fathoms at (laspc. 



IJiloculina riiigans scarcely occurs above 30 fathoms. 

 At [Murray Bay, which is only about GO miles below the ])oint 

 where, at least, tlic surface of the St. Lawrence becomes perma- 

 nently I'rcsh, the roraminifera become very scarce and poor. 

 Polystomella striatopunctata is the most coiumkhi, but it has 

 become very small. Nonionina Labradurica, Lituula CanaiiLUsis 

 and Trochammina inflata also occur, but all natch reihicod in si/e 

 and scarce relatively to tlic amount ol' material examined. () 

 passing from the Gulf to the cast of Newlbundland. or to th( 

 south of Cape Breton, a change from the Gulf Fauna is imme- 

 diately detected. Polystomelhi striatopunctata, tliere so cnm- 

 mon, becomes rare. Xonionina Labradorica to a great extent 

 ceases to appear, and Uvigerina pygnuca and Ca.-sidulini(l:o 

 become more frequent. 



The arenaceous Ilippocropina, (Fig. 2,)- and ].ituoI;c (Fi-s. 1 

 and 3) are most plentiful at depths less than 20 fathoms. Lituola 

 scorpiurus (Fig. 4) goes down to the greatest depths in Gaspd 

 JJuy, and is yet abundant at 10 fathoms, while the immense 

 Bhabdoplcura abyssorum (Fig. G) only appears at about 20 

 i'athoms, and continues from that point increasing in nuuibers and 

 size to the depth of 50 fathoms, which is the greatest de])th in 

 Gaspe Bay, where alone it lias been found. 



The distribution of these Foraminiicri would tend, with other 

 ficts, to show that these organisms, together with most other 

 marine animals of low organization, do not depend, to any -^reat 

 extent, on the depth or intensity of daylight, ])ut ahnost entirely 

 on the hmprnitnvc of the water, as Dr. Carpenter maintains in liis 

 account of his recent deep-sea dredging, so that they would not 

 give very satisfactory evidence of the conditions of deposit ol' 

 I'ostj.lioccnc or other beds, unless other facts were at di.-posal to 

 show the depth, when the Forauunil'era would give valuable -a 



assistance with regard to the climatic conditions at that depth. V 



* The (iirurcs refer to the numbers of the wood-cut^. 





