316 • BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



piles maybe cut to wave base is known, and on page 311 of this paper 

 Foye is quoted on a process by means of which reduction of hmestone 

 masses to sea level or slightly below sea level is accomplished. 



In this connection Salt Key Bank, which lies between the Straits of 

 Florida, Santaren Channel, and Nicholas Channel (text-fig. 22), is 

 interesting, as it is 61 nautical miles long by 37 nautical miles wide. 

 Except a few marginal islets and elongate keys, it ranges between 

 3i and 8 fathoms in depth. Alexander Agassiz visited and described 

 this bank ^ and says that it is composed of eolian rock similar to the 



64° ' G3° 



17 



225 286 2^ ^^^ 



,225 , ,„ 



341 



' M \ 375 N^felSabal. 



' Rd *^ OA ^ ,'^^7(2820) 



156-^ "" \^^~120 



X ® ^ 23 15 .2l:^,^ 360 



200 /■^'^ 67 20 15 13 12 \^ ^\oO 



/ 68 15 12 ll\J \~^N 220 



,/36\150 107/' 17 v. ,34 ^ 



/S-A.122,>^32 21 -19 W ^2 11^^. 7\\ 



7 ^ 39 '"^ 23 20 '' 16 12 10 ll\A:\ . 



593 I 22 18 20 (cVear wktte coral sand) 11 (?) .^} ''VlO.^:/ $■•• ° 



\ 26 „., 21 1^ 1^ 11 12 ll'@/^/C 4^ 



■^"\ 29 20 1^ 13 ,„ /// ./„*■ 



\ Ifi 14 12 12 i2^ 10i4o» ^•Z 



19 18 '"^ " -^^ ^.r-^-'9-"'-^-n\N.'^^ 

 24 .d^ (ig^ 12 <a--"r-^::::rrrl-.-r^4 ,.^/ 



--"-148 . 533 



641 



510 



408 

 646 ■ 503 



580 

 776 826 



679 



478 



— 810- — 594- 



951 ™3 



995 



17' 



64° , 63° 



Fig. 23.— Chart of sa.n saba bank. From U. S. HYDKoaRAPHic chart No. 2318. 



Bahamas. The bank looks as if it were once a part of the Bahamas 

 and was dissevered by faulting between it and the Bahamas. 

 Whether that suggestion is or is not true, there is here a large level 

 bank, obviously not formed according to the Darwinian hypothesis, 

 that might serve an atoll foundation. Saba, Pedro, and Rosalind 

 banks in the Caribbean Sea^ have been mentioned on pages 303, 304. 

 Figures 23-25 illustrate them. 



It is not practicable to work out the geology of the foundations of 

 the Paumotuan and the Maldive and Laccadive stolls, but the 



lA reconnaissance of the Bahamas, etc., Mus. Comp. Zool. Bull., vol. 26, p. 81, pis. 1 and 31, 1894. 



