THE AMERICAN 



MONTHLY 



MICROSCOPICAL JOURNAL. 



Vol. XVIII. AUGUST, 1897. No. 8 



Some Collecting Apparatus. 



By Dr. E. v. DADAY, 

 budapest, hungary, 

 with frontispiece. 

 If we take some water in a clean giass vessel from the 

 body of a lake and examine it attentively, holding it 

 towards the light, we shall flndin most cases that there 

 are in tlie water, although ajjiiareiitly quite clear, small 

 bodies and living beings of molecular minuteness swim- 

 ming about, each in its own way. There was a time, not 

 veiy remote, when students of the microscopic world 

 contented themselves vv^ith examining each drop of the 

 water drawn from a lake, with a magnifying glass in 

 order to tiiul the small animals in it. By such a proceed- 

 ing vve are in most cases left to cluince. It is* mere luck 

 if vve find something in the water. The naturalist desir- 

 ous of ,'-;t'lnng thoroughly acquainted witli the micro- 

 scopic fauna of a lake cannot stop at this point, but ought 

 to recur to sucii e.Kpedients as will assure him of the 

 cibsolutt' ness and success of liis researches. He 



must proMdo inmself with suitable implements and they 

 are nuinerous. He must at the same time provide him- 

 self with the means of conservation. For collecting 

 specimens of water-fan: ;uake use of a net. Cou- 



siderint'' the extreme minu;tiu ss of those beings we have 



