( 562 ) 



places it is brownish. Moreover there are light-grey \vorm-sha[)ed 

 parts, varying in length and having a breadth of abont 6 millimetres. 

 This erratic-block is most prol)ablj a piece of Under-Cambrian sand- 

 stone, in ^^'llich is found one of those problematical things that are 

 sometimes called worm-passages. As they are not straight and do not 

 run parallel to each other, they are different from those described as 

 Scolithus linearis Hall. They show more resemblance with those tubes 

 that were described by Toreli- ') as Scolithus errans of Hardeberga 

 and Andrarum. According to Holst '), however, there are various 

 kinds of these worm-passages differing from Scolithus linearis Hall, 

 whilst they also occur in different layers. This geologist makes men- 

 tion of them as being found both in many })laces in the neighbour- 

 hood of Simrishamn and near Kalmar. 



The Odoorn erratic-block bears no resemblance to the Hardeberga 

 sandstone, in a\ liicli Scolitlius errans Torell is found. Moberg ") writes 

 that this sandstone shows a greyish-green colour, and that the worm- 

 passages are dark-coloured. Nor does it resemble the Andi-arum (For- 

 semölla) sandstone. According to Tuli.berg ') the latter is a while, 

 quartziferous sandstone \vith yellow ^^ orm-passages. 



The erratic-block also differs from the "Kraksten", wliieli Holst 

 mentions, as being found near Kalmar, and which is greenisii grey. From 

 the kinds of sandstone with worm-passages which according to Holst 

 are met \vitli in the neighbourhood of Sinu-ishamm, differs that which 

 occurs to the West of Raskarum in being whitish ; and tliat which 

 is found close by Ljunglyckorna is different because its worm-pas- 

 sages possess a dark colour. The sandstone which, according to this 

 geologist, occurs" to the North-West of Raskarum, may resemble, in 

 colour, tlie Odoorn erratic-block: he says that its colour is sometimes 

 a dirty-grey one. Unfortunately he does not tell his readers what is 

 the colour of the worm-passages. 



Consequently we cannot with certainty conclude whether tiiis 

 kind of sandstone still exists as firm rock, or not. 



Nor have I been able to fnid anything whatever concerning the 

 presence of suchlike erratic-blocks in the German and the Dutch diluvium. 



1) Torell, Petrificata Siiecana formationis cambricae. Luncls Univ. Arsikrift. 

 1869. Tom. Y[. p. 12. 



2) Holst. Beskrifning till kartbladet Simrishamn-Sveriges geologiska Undersökning. 

 1892. Ser. Aa. N'. 100, p. 13. 



Holst. Bidrag till kaunedoraen om lagerföljden inom den kambriska sandstenen. 

 Sveriges geologiska Undersökning, 1893. Ser. G. No. 130, p. 6, 13, 14. 



=5) MoBERG. Geologisk vagvisare inom Fogels'lngstrakten. 1896. p. 30. 



'^) TuLLBERG. Om Agnostus-arterna i de kambriska aflagringarne vid Andrarum. 

 Sveriges geologiska Undersökning. 1880. Ser. G. N*^. 42, p. 3. 



