Náttúrufræðingurinn - 1985, Page 24

HEIMILDIR
SUMMARY
Alexander Bjarnason. 1860. Drykkjujurt-
ir. — Akureyri.
de Wit, H.C.D. 1965. World der Planten.
Hague. (D. útg. Alv.plant.)
Eggert Ólafsson & Bjarni Pálsson. 1772.
Rejse gennem Island 1752—57. —II.
Soröe.
Hið íslenska fornritafélag. Bjarnar saga
Hítdælakappa. Reykjavík.
Lundt, Jörgen. 1800. Forsög til en be-
skrivelse over Færöerne. — Kaup-
mannahöfn.
Ostenfeld, C.H. & Gröntved, Johs. Flora
of Iceland and Færoes, — Kaupmanna-
höfn.
Oxford English Dictionary 1971-1972. -
Oxford 89.
Schmeil, O. 1922. Lehrbuch der Botanik.
— Leipzig: 194—195.
Sigfús Blöndal. 1920—1924. Islansk-Dansk
Ordbog. — Reykjavík.
Stefán Stefánsson. 1948. Flóra íslands III.
- Akureyri.
Steindór Steindórsson. 1978. íslensk
plöntunöfn. — Reykjavík: 75—76.
Step. Edw. 1952. Wildflowers of the
Wayside & Woodland. - London.
On the effects of madder
(Galium verum)
by
Baldur Johnsen
Skeljatanga 7
101 Reykjavík
It is postulated tliat the plant madder
(Galium verum) in fodder of cows in Ice-
land is the main cause of the so called
„Gellir“=yell, i. e. formation of curds
when such milk is heated, thus upsetting
the conventional „skyr“making. In this
peculiarity of the madder we might find
the origin of the cheese and „skyr“making
in the antiquity.
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