KAARK mONSTKK SI Kø M M.-N. Kl. 



l'crticnl 7 uis. Atii^ust 16. kji.S. I Ik- |)liyto|)lankton was compara- 



»tively poor, tlv ihicc species Ccrcxtimn liiritndinella, Actitjoholrys confcrtus 



and Anabama Lnmnrriuniiiiii in some quantities, tlic other Algæ scattered. 



13. V a a g e v a n tl c t is a lont^ narrow lake in the Otta valley through 

 which the great Otta river runs. The river carries a great deal of slemmed 

 particles frnm the glaciers, and the transparency of the water may be only 

 1/4 — I meter in the summer. Its maximum depth is 76 m's but there are 

 also shallow parts. The elevation is 351 m's above the level of the sea. 



The surroundings are naked mountains, forests and cultivated areas. Two 

 collections were examined, the first, from the surface, September 9. 1898 

 contained almost onlv anorganic particles and detritus. 



The second, from a depth ol" / iiis, August (S. i<S'(j6 was of some 

 Cjuantity. (rratiuni liiruudiurlla was predominant with Sfaurastnon para- 

 (foxuin var. cinguhini and some Diatoms. ( AsteriourUa, Surirrlla, and 

 Tabellaria.) 



14. L e m o n s J o e n is a mountain lake at an elevation of about 900 m's 

 in the mountains in the West of Gudbrandsdalen. The maximum depth is 

 about 45 m's. The drainage-area is very small and the surroundings are 

 chiefly mountain forests, but partially they are wood-less. 



J^rrtical j nis. Scptciubrr ji. iScj^S. The plankton was very rich. 

 CydoicUa predominating, in verv great quantities. Numerous Desmids occurred, 

 such as Staurastruui paradoxuin, Sfauras/ruii/ Inrvispiinmi and Cosiuariuiu 

 dcpressum var. achondruui. 



15. Kvi tingen is a small mountain lake Just in the North of the 

 preceding. 



Vertical 2,j m's. August 6. i8i)6. The plankton was especially note- 

 w^orthy for the occurence of Synrdra Lciiniirrnuiniiii, an Alga which is not 

 previously recorded from Norway. 



16. G o v a a 1 i V a n d e t is a small mountain lake situated near Kongs- 

 vold in the Dovre mountains. I can not decide, without a topographical 

 map if the lake is situated in Opland or perhaps in Sor-Trondelag. The 

 surroundings are decidedly of an Alpine character. — One plankton-collec- 

 tion was examined (Vertical saiuplc July 16. içiy.) and proved to consist 

 mainly of Dinobryou diverge/is with Euuotia hniaris and scattered specimens 

 of broken filaments of Aiuiba'ua sp. 



17. Dy r d als V a n d e t is a small lake in the district Oitjeld in Tele- 

 mark. The maximum depth is 24 m's. The sample examined was collected 

 September //. /çt<S'. — The phytoplankton proved to be poor, Anabœna 

 Lemmernuiuuii being the chief constituent with some scattered benthonic 

 Desmids. (Hyalotheca neglccta is especially noteworthy, as this species is 

 not previously recorded from Norway.) 



