( 342 ) 



AVe may riiillicr iiiculiuii tluil here, as in llic lill of llic Alir(liiiii 

 Klif, tüjits and Siliii-iaii liinc-stones. oct-iir most lV(M|ii('iilly. 



Lak'ly Mr. Stoki, uavc mr a iiiimlx'i- of Scaiidiiiavian sloiics from 

 a boriiig al Koou' Jiear Zaandam. Amujiusl (hese. md \\ illi al alxuit 

 40 AI. ; A.I'., are aii abMulc of 120 m.AI. lar.uesl dimension, a 

 granilo, nol nnicli smaller, diilerenl Silurian linieslones, oneofwliieli 

 is 65 m.AI. 



riie t'aets staled prove, lliat in llic mentioned part of Xoi-th- 

 Holland, beneath 31 A. P. tliei-c is a l>ed of bonlder-elay, a 



real bottoni-moi-aine. On it i-esis at Titgeest and at ('asli-ienm, 

 ('Oarse-graijied sand and i» ra\ cl b-om the lowest part of which, 

 no donbt, some of the descril>ed iM-raliea come and w liieh contains 

 shells, mai'king il to belong to the so cabed Kem-bc(b the ecpii- 

 valent of the Fhiudrun of Knlot. 



()f importance, for the com|»arison of the geological sti-uclnrc with 

 other locahties in oui' Xorlh-Sca pro\inc('s. is tiie fact that bonlder- 

 claj was lacking at a correspon(bng de|)th in two other borings, 

 [about inid-way Ix'twccn the two described] in the (hnics at ('astri- 

 cuni, one of \\ hich went as (h'cp as 45 A[. .' A. 1*. There, at 

 40 M. -f A. P., wa< a thin layer of 0.:50 lo 0.40 Ai.. and between 

 30 to 35 Al. \.V. coai'se-grained >and and üraxcl, containing 



similar smaH pebbh'>> of beyi'ichian-limeslone. ( )n acconnl of the 

 absence, in the I wo last meJitioned boi-ings, of distinclly marked 

 ltouhUM'-i'la\ , tlie existence of a holtoni-moraiiie, immiMhalely under 

 the Eeni-bed. woidd have been j)resunied as hide here as in 

 most other cases elsewhere. Still proofs of its e.\istence, also in 

 other s])ots in ajid near the dunes of the North-Holland ujainland 

 are not wanting. 



For instance, at lK)rings done, some years ago. in behalf of the 

 Harlem waterworks, at 3 K.AI. west of Santpoort and 12.5 K.AI. 

 South-west of the boi'ing-hok' al uitgeest, at a depth from 3<S.75 to 

 43.75^ A. P., a bank of sandy clay or raiher lill was IouikL 5 Al. 

 thick, towards its liase changing into -and nnxed with clay, which 

 now appeared being only another pail of the same bottom- 

 moraine as the one at Castricnm and at Uitgeest. Shells of the 

 Eem-bed occur in it, down lo 35 ^ xA.P.. although ihe clay or the 

 till seems to be raiher jjiire, washing shows il for ((uite 74 *o 

 consist of angular grains of sand, containing stnne small stones 

 of a peculiar nature. Fi-om about iOO cAP'. of that clay i) augidar 

 pebbles, of beyrichian-limestone were obtained, of which the biggest 

 is 10 niM.. and 12 b-agments of (M-u|>live roidvs of diirerenl kinds, of 



