( 341 ) 



Avell kiKtwn lo iiic, fi-oiii llic IxtKoiii-inoraiiic nl" llic Mirdimi Klif in 

 (Taaslerlaiid, which facl places their oriiiiii hevoiid ari\' (hxihl. 



The l)i^u-,ü'est of ihose limesloiie pclihh's. coiisistiim- ol" {'oral-nine- 

 slniie, is of '.V2, the siiiaUesl of (S m.M., maxiiiial (hiiKMisidii. A 

 (hirk shile sloiie of '.VA inAl. ,i:i'ealest (liiiieiisioii. shows a [tolislied 

 surface as hv ice-actioii. 



The \\\c\ ihal \ve inetM her(> wilh a foi'iiialioii of the same kind 

 as tlie Olie found on the south coast of I^'rieshmd, urew perfeclh' 

 clear when e.xaniiiiinu' specimens ol' deposits from horinus, (htiie l)\ 

 Mr. A. .1. Stoki,, near the station of rilucesl, at 5 oi- (> K. AI. sonlli- 

 east of tliose near ('aslricnm. Mr. Stoki, who made also the horinus 

 in the diuies near Castricum, had not onlv kept the specimens of 

 those at ritgeesi, hnt of manv others dojie hy him, which speci- 

 mens lie allowed me to study. 



Also at rilgeest, at a depth e(pial to that at ('astriciim, i.e. from 

 .'^1 M. down lo H(S 'M. ; A.W, a lar^e nnmher of stones ha\e heen 

 found imbedded in clay, mixe(l with orji (,f rocks, |)erfeclh' similar 

 in their petro,nraphical character to those at ('asli'icunr, those stones 

 were even of considerable dimensions ajid for more than the half 

 uiidouhtedly of Scandinavian oriuiii. lender the cday auain ^ravellv 

 sand, to a depth of 4!] M., where it rests on a bed of I'ather still'clav. 



Accordiiig' to communications from Mr. Stokl, the stones, foi' the 

 i;Teater part, come from the (day-bed, 7 M. thick. 



Indeed some of the stones show some still adiiei-iiiu- (day. Amonu-st 

 the rocks are prominent, besides (piart/.ite of w hi(di the biuuest 



stone is 85 m.iM., maximal dimension — , w hite ipiart/, an odd lydile 

 and sandstv)ne, some pieces of crystalline arkose, b-om the Ibinlcr 

 on the ivhine, of the size of a walnut, birthei- dilferenl eru[>li\-e rocks 

 of Scandinavian origin, namely granite, compact porphyry. lesti\arit(\ 

 orn(">ite, esj)ecially flint nodules, some of these being (50 luM. Ihil 

 also here, the Silurian liinestone-pebi»les are the most imporlani ; 5 

 of them lia\e been kept, consisting mo-lly ol bey richiaii-limeslone, 

 strikingly resembling those \vhi(di occur in the boulder-(day of the 

 Mirdum Klif. 



Those pebbles are of the follow ing dimensions. 



I. 3i) X 33 X "^4 niM. 11. 44 X 35 ,. |,s niM. 

 111. 33 X 25 X *25 „ IV. 34 X 33 x 17 ., 



V. 30 X 27 X 20 „ 



I and 11 show unmistakable signs of liaxing been polished and 

 (diaractei'istically striate(l by glacial action, whereas the three others, 

 although not \ eiy hai'd stones, lia\ c al least the angular appea- 

 rance of glacial pebbles. 



