58 
MEMOIR OF CAMPER. 
a great cluster of many niillioiis of these worms, 
wlhcli obstructed the \viu(l-[)ij)e, and bad cboUed 
the animal. In all that died from the disease, the 
cellular membrane of the lungs was filled n ith the 
wonn.s, while the air-cells were free. Examined 
through the microscope, the worms were found point- 
ed at head and tail, and aljout one sixth of an inch 
in width ; they were also discovered to be viviparous. 
I have made extensive, though fruitless researches, 
to find any account of this disease in authors, or any 
description of the worms in the works of naturalists. 
Klien, Linnffius, Pallas, and Muller, and all those 
who write particularly on worms, have confounded 
them with the Vena medinensis. The appellation 
gordius has been given to a filiform worm, but in 
comparing it with tliis pulmonary one, it is evidently 
distinct. It is singular that Gesner has given to a 
worm somewhat similar, the name of Wasscr-kalb, 
at the same time observing, that he does not know 
its origin. He, however, likewise knew that the 
calves sometimes swalloweil them with the water 
wliich they drank, and at the great peril of their 
lives. Gesner, therefore, knew that there were 
worms which induced a disease in calves which was 
frequently mortal.” The celebrated M. Goese, in 
his admirable essay, Hist. Nat. des Vers lutestin. 
des Animaux, written several years afterwards, de- 
nominated this species Les Vers de Camper. 
“ I lost no time,” he continues, “in stating in the 
public papers a discovery so important for the couu- 
