PHYSIOLOGY OF THE INVERTEBRATA. 



153 



X 507 to X 474 (?) was visible. Sulphide of ammonium caused 

 these bands to disappear," but Dr. MacMunn could not then 

 detect that of reduced hsemoglobin. 



The various colouring matters contained in the blood 

 and organs of certain worms are given in the following 

 table : — 



Dr. MacMunn has examined the green fluid (containing 

 chlorocruorin) of Sabella by means of the microspectroscope. 

 The spectrum (Fig. 30, a) consists of a dark band before 

 D, and a feeble one between D and E. The green blood has 

 " a reddish tinge with reflected gaslight, and in most cases is 

 green with transmitted daylight, and reddish with transmitted 

 gaslight. Ou dilution with water this fluid gave two bands: 



