( 345 ) 



b\^ ;i>^ i\ (isl, of ;i siiioolli, hul niiLiiiIar sloiic, coiisisliiiLi' of' (olsilo- 

 j)or|)li_\ rv, raised tVoiii a dcplli of 4(5 M. ! A. P. ^) 



Those iiislaiices may siirCiee lo sliow llie very rre(|iie]it oeciii-i-eiu-e, 

 in Xoiili- and Soiilli-llollaiid, of exideiiee (ifai) iiici'ease<l li-ansporlinii' 

 power, in llie laller pai'l of llie IMeisloeene or J)iln\iuni l'ei'iod, nol 

 oidv of llie walei'. I»nl also of an oilier means of ii-anspon, i.e. hv 

 the k-e. 



The t'acls kjiown al presejil, no loniicr lea\e any donhl as lo ihe 

 real exisleiice of a youiiuer '\ura\-el-dilu\iiiin"", here and ihiM-e aller- 

 naliiiU' \\itli l>oiddei'-elay. This yoiniu'ei' formalion is less powerl'id 

 than ihe older "LiraNcldilnxinm", for il rai'ely eonsiderabh' exceeds 

 ten meiers, hnt it has an eipial riulil as Ihe already lonu' known 

 older and more jiowerfnl one lo he considered as parlially prodnced 

 hy an advajice of Ihe Sca]i(lina\ian land-ice, parlially hy an incivased 

 and moditicated trans|)orlin,u' l)o\ver of ihe Ivhine, which ri\er llien 

 carried much float iii.U' ice. 



Ik'fore coiiclndinu' I may he permitted to add a thinu' ohser\ed, 

 a year a.ü'o. in the honlder-clay of the .Mirdnni Klif. Amoiiust other 

 heanlifnliy scratched, .glaciated stones, 1 collecte(l there fonr, of which 

 three consist of heyriehian-limestone, which are not less tyi)ically 

 faceted as those descrihed from the ulacial Pernuan iji the Salt 

 Kan.U'e of the I'imjah, from which circumslance it is evident that 

 there is no necessity to snp|)ose for the Pahieozoic g'lacial period, 

 circnnistances entireh' different from those of the Pleistoceiie Ice Au'c. 



1) Towards tlic east ot tlie Harlem inermecr jioldei- stones occ-ur at a inurli 

 liigiier level. 'I'liis was lVe(|ueiitly slated in Ijorings done on the grounds of the 

 nnlilary waterworks near Sloten; amongst more oilier pebbles, I saw a fiagnieiil 

 of greenish grey sand-slone, 11- cM., laigesl tlinKiision, wliicli fragment bad been 

 raised near the l^nngvaail of llie Harleinmermeer polder, from a depth not greater 

 than 10,5 M. \ A. P. A similar fact is known rrom Aalsmeer. I'be undisturbed 

 liorizonlalily of Ibe der|i peal-layers in Ibis region (llie one, more continuous, 

 having its base al 11 or \'.) M. '. A. 1'.. Ibe oilier, bagiiienlary, at about Is 

 M. [ A. 1'. and nearly rontimious to the norlli and iiortb west, Iroin I^iirmerend 

 lo Hoorn and Kiikbiii/.eii and bom Wormerveer. Velsen and Beverwijk to bJinuid('ii, 

 its base being. indilTereiilly. a! 17 lo !2() M. '. A. P.) shows thai we have nol before 

 us al Stolen and .\alsineer, the lesiilt ol' a general sjiping ot Ibe strata, but 

 only a locally higher situation ot the upper pari ot Ibe Diluvium, the coarse 

 sediments having here been locally upbeajied. 



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