VII 



put in a small glass vessel containing spirit immediately after 

 gathering, and as far as possible should be protected from 

 shaking, etc. If possible attach a short pencil-note about 

 development, etc. - 



4. Which plants bear ripe fruit? Please collect everything which 

 bears testimony of fructification, e. g. also old empty fruits. 

 Ripe seeds of all species are very much granted. 



5. Can a species break off its process of flowering and fructifi- 

 cation at the beginning of winter and resume it next spring, 

 without having suffered during the winter? (cfr. a Cochlearia 

 at the winter station of the „Vega"). 



6. Please observe the duration of the sunshine; and register 

 temperatures in the sun and at the height of the vege- 

 tation, preferably with thermometer balls of a colour approach- 

 ing that of the green leaf or at any rate black, so that an 

 idea may be formed of the degree of heat to which the vege- 

 tation is exposed. 



7. Has earth been met with which is always frozen and to what 

 depth? Does this obviously affect the vegetation, and in what way? 



8. Note the degree of moisture in the air on the coast and up 

 in the country; the temperature of the snow, the earth, 

 and the water at different depths. 



9. Please note all spring and autumn phenomena in the animal 

 and vegetable world (the coming out of the leaves, and their 

 fall; the tint of the autumn leaves; migratory birds, etc.), and 

 make collections giving information about them. 



10. Can birds and other animals carry seeds which have the 

 power of germination, or in any other way bring about the 

 migration of plants? 



Darwin, and others since his time (amongst them War- 

 ming and Kolderup Rosenvinge) have proved that seeds, which 

 have lain in salt лvater for a long time, have kept their power 

 of germination. On a long sea-voyage, e. g. from Greenland 

 to Copenhagen, there are good opportunities for making such 

 investigations, and if there is time and opportunity, it would 

 be of very great interest to proceed with such investigations, 

 as they would be able to throw light on the possibility of 

 plantmigration over the sea. 



11. If opportunities occur, the colours of the flowers should be 

 noted according to the scale provided for the purpose. 



