beliggende Vånding. Udløsuiugen foregik enten ved Appa- 

 ratets Anslag mod Bunden eller i intermediære Dyb ved 

 et langs Linen nedsænket Lod. 



Ved Udiirivelsen af de i Våndet indeholdfe Gasarter 

 anvendte Jacobsen Bunsens Princip, idet Våndet kogtes i 



munication with the outside water. The detackment was 

 effected either by tbe instrument striking the bottom, or, 

 at intermediate deptbs. by running a*weight down tbe line. 

 For expelling the gas contained in tbe water. Jacob- 

 sen made cboice of Bunsens metbod. boiling tbe water in 



Fiff. 1. 



et ved \';unl<l:i ni|» (rembragi Vacuum, og construerede i 

 "Forbindelse med Dr. H. Bekrens i dette Øiemed et Appa- 

 rat, som i Simpelhed og Paalidelighed Intet lader tilbage 

 at ønske. Apparatet, sum lindes afbildet i Figur 1. har 

 af Jacobsen faaet følgende Beskrivelse: 



a vacuum created by steam-, aud to meet the Eequirements 

 ol' tli is process, he devised, with the assistance oi' Dr. H. 

 1 Behrens, an apparatus which in trustworthiness and sim- 

 plieity of construction (eåves nothing to l>e desired. Tbis 

 apparatus, of which a drawing is given in Fig. 1. Dr. 

 .laeolisen lias desrribed as tollows: — 



