406 ACCOUNTS RESPECTING LINNvEUS. 
her aid in this singular and striking phenomenon. To remove all 
doubts, I took the other crab still covered with the supposed hair, di- 
vested it of that cover which nature has laid on the backs of all those 
species, and showed him on every one the appearance of an human 
face. His attention was still more engrossed, at my making him perceive 
through the glass, that those little filaments which sometimes appear 
on the back of those crabs and resemble a hairy cover are not hair, if 
viewed with the naked eye, but a sort of coraline moss, which some- 
times settles upon those crabs, in the same manner as there are among 
some sorts of the small shell fish, certain species encrusted with a 
madreporous or milleporous sediment. 
Linn.eus convinced himself in the same manner, that the number 
of prickles on the back of the Cancer Hirtellus, which lie had fixed at 
ten (thorace hirto , utrimque quinque dentato) was not a solid description ; 
b t that most of them bore only eight, some nine, and the smallest 
number ten. I afterwards gave a separate description and representa- 
tion of this species. 
The elder Linnjeus, gave no leHures at that time, but I wished 
at least for an opportunity to hear his son. The latter just read a lec- 
ture in the forenoon upon botany. The time having elapsed with our 
conversation upon Zoology, I left his father with the promise accord- 
ing to his request, to come and see him every day during the whole of 
my day at Up sal. 
The younger Lin n,e us was somewhat taller than his father, but at 
tnat time less corpulent. His delivery was fluent, but mixed with a 
certain cold indifference. It appeared as if his exertions were rather 
a stria performance of the duties of his station, than a real zeal flow- 
