[ 55 3 



that our author in this journey dircovered above ari^ 

 hundred plants, which before were not known to 

 be indigenous 5 many of which were fuch as are 

 ufed in phyfic, and in dyeing. He pointed out to 

 the natives feveral plants of great ufe in ruftic 

 economy, and fhewed them the advantage of 

 planting the Sea-reed grafs (Arundo arenaria) to 

 arreft the fand, and form foil on the fliores \ to 

 which it is extremely well adapted by the length 

 of the roots. In the Iter CElandicum there 

 occurs a curious remark in vegetation, confirming 

 the annual increafe of the v/ood in an oak-tree, 

 in which was perfe6lly diflinguifhed the hard 

 winters of 1578, 1687, and 1709, by the narrow- 

 ncfs of the circles in thofe years. He defcribes 

 the procefs for making tar, as praclifed by thefe 

 iflanders ; and further, interfperfes many obferva- 

 tions relating to mineralogy in general; to iroa 

 in particular, with which Sweden abounds ; de- 

 fcribes the iron mountain Taherg^ (See PhiL 

 'Tranfa5l, vol. xlix. p. c^o.) the alum mines of 

 Mockleby *, the Poma chryftallina^ or aetites marmo^ 

 reus^ which illuftrates the formation of chry& 

 tals, ^c. 



In the Iter Scanicum, performed in 1749^ 

 our author treats largely on the culture of marfhy 

 grounds ; on the ufefui and noxious herbs, for 

 inftance, the Stakan^ fuppofed to be the Phellan* 

 drium aquatkum^ or Water Hemlock^ which it is 

 believed renders horfes that eat it paralytic ; on 

 the Gramen Mann^^ or Fejiuca fluitans^ the feeds 

 of which are fo particularly ufefui in fattening: 

 geefc J on -the ^garicus mufcarm, dcc^ 



D 2 la 



