f, n'lTO V. DARBISHIIIK. [SEC. ARCT.EXP.FRAM 



Thive habitats deserve special mention, namely the bones of ani- 

 mals found in the soil and projecting a little, drift-wood, and droppings 

 of the rnu.-k-ox. 



Tin- following few plants have been observed on various bones: 

 Lecanora varia, J/(i/<'ni. Uinodhm tnrfacea, and Knell ia parasema. 

 It is important to notice that these lichens growing on bones as far as 

 I can make out only very slowly decompose their organic snbtratum. 

 Thi-n- i- no >ign of decav. 



. 



hiiftu I I have found to bear specimens of Caloplaca cerina, 



(.Hi-hid and jnnyermanniae, Lecanora epibryoii and Knellia. myrio- 

 cai'i>a. The wood I examined consisted of oak-planks. 



Another substratum with a characteristic ilora of lichens was that 

 of the droppings of the musk-ox. On these 1 have found Biatorina 

 ylohulosa, Caloplaca pi/racea, Gyalolechia snbsimilis. Lecanora epi- 

 bryou, Aspicilia verrucosa, Rlnodina tnrfacea and even, firmly atta- 

 ched. Thamnolia vermicularis. 



