3 o ROLLIN T. CHAM BERLIN 



locality where the human bones were found the country section 

 adjacent to Van Valkenburg's Creek commences with the coquina 

 rock at the bottom, just as does the section of the creek bottom. 

 The coquina beds are followed by 2-5 feet of variously tinted sands. 

 An orange-brown, ferruginous sand is a very persistent phase. 

 These sands become dark-brown to blackish at the top, but are not 

 very firmly indurated. At most points this sandy deposit forms 

 the present surface, but in some isolated areas it is capped by a 

 pondlike deposit of drab-colored, clayey, fresh-water marl. As 

 this is being utilized for road material, the clay marl areas have 

 been opened up to view and their extent is well known. 



The south bank of the canal one-third of a mile east of the 

 Florida East Coast Railroad bridge gives the following section: 



0) Drab-colored, clayey, fresh-water marl 3 ft. 



n) Dark-brownish, mottled sand, lighter colored below, getting darker 

 above and at the top showing nearly black material, indicating an old 

 soil line 2 ft. 



m) Marine shell marl (coquina) 1 ft. 



The tract represented by this section lies nearer the coast than 

 the locality where the human bones were found in the stream 

 deposits, and hence has less specific bearing on our problem than 

 the upland section of the tract adjacent to the creek above the 

 critical locality. 



Upstream. — The upstream section was found to be somewhat 

 different from the coastward section as given above. Approxi- 

 mately 200 feet southwest (upstream) from the point where the 

 human relics were discovered the waters of the drainage canal 

 pass over a spillway and drop about 9 feet. This spillway is west 

 of the junction of the two tributary branches of Van Valkenburg's 

 Creek and lies outside the creek valley. For the first half-mile 

 west of the spillway the canal has been cut through the following 

 succession of beds: 



d) Pure-white, coarse-grained, wind-blown quartz sand 4-7 ft. 



c) Soft, spongy, peaty layer, containing many partially decayed roots; 



in places absent 0-6 in. 



b) Dark-brown to true-black, firmly indurated sand or sandstone; 

 cemented by ferric hydroxide and organic matter, but the color of 

 iron staining is largely obscured by the organic black 2-4 ft. 



