( 5^3 ) 



jllaficr and oJic iiiighl roasonalily expect to (nul in the \alle_v8 

 some remains of the wall of moraines. That this is not the case 

 may be accounted for by the supposition that the great Baltic ice- 

 stream has travelled fiirther south and in its course also destroyed 

 these evidences. As there exists a ureal diversity of opinion with 

 respect to this forward movement of the ice-stream, it seems necessary 

 here to state wiiat is known of the dispersion of Scandinavian 

 erratics in the Provinces of Limlmrü; ami North-Hrahant and the 

 Campine. 



As long ago as 1778, J. A. dk Lie mentions the discovery of 

 blocks of granite between I'ostel and Alfen, and also near Lommel 

 and Helchteren '). Subsequently, .1. .1. d'Omalius d'Hali.oy drew 

 attention to the numerous blocks of granite and other fragments of 

 "primordial" rocks found on the heath of the Campine. "T>a quan- 

 "tité de ces blocs doit étrc été immense ; car quoiqu'on fasse 

 "nn grand usage pour paver les rues, ainsi que pour faire des 

 "jetées Ie long de la mer et des rivieres, on en voit beaucoups 

 "dans les bruyères". ') And Engelspach — LAUiviiiKE adds the infor- 

 mation that some of these blocks of granite measured several 

 M. cub. ") Somewhat later again, .1. (i. S. van Brkda mentioned 

 the linding of two pebl)les of granite in the subsoil of Maastricht, 

 very justly remarking that these rocks must be regarded of later 

 date than those transported from the Ardennes ^). At that time lie 

 already spoke of blocks of granite found at Oudenbosch, in North- 

 Brabant '). Staring expressed the opinion that these erratics had been 

 brought there by "some accidental means or other" "), although a 

 short time before Norbert de Wael liad recorded the tinding, at 

 Weelde, 10 K.M. to the NKE. of Turnhout and also at Poppel, 



found for the transport uf liie blocks ol' qiiartziles from the Ardennes. (Sur le 

 transport et le déplacement des cailloux volumineux de TAmblève. Ann. Soc. 

 géol. de Belgique. XVIII. Liége 1890-91. Bull. p. CVII-GIX). 



1) Lettres physiques et morales sur I'hisloire de la terre et dc Fhonime. IV. 

 Paris et La Have 1779, p. 54, 57. 



-) Mémoires pour servir a la description géologique des Pays-Bas, de la Flandre 

 et de quelques conlrécs voisines. Naniur. 1828, p. 204, 205. 



•') Considerations sur les blocs erratiques et roches primordiales Bruxelles. 1829 

 (fide P. GoGELs. Ann. Soc. roy. raalacolog. de Belgique. XVI. 18S1, Bull. p. LIV). 



*) Natuurk. Verhandel, van de Holl. Maatsch. v. Wetensch. XIX. Haarlem 

 1831. p. 39Ü. 



■ ') The biggest one originally weighed ± 5300 K.G. (V. Becker). Het zwerfblok 

 van Oudenbosch en zijne omgeving. Studiën op Godsdienstig, Wetensch. en 

 Lelterk. Gebied. XXX. utrecht. 1888, p. 25). 



"*) De bodem van Nederland II. Haarlem 18G0, p. 78. 



