1888.] Dr A. B, Griffiths on the Malpighian Tubes. 11'5 
It appears from the investigations already published by one of us 
on the so-called ‘‘ livers ” of the Invertebmta, that the pancreas was 
Fig. 3 . — Uraster rubens. Dissection from dorsal or aboral 
aspect, showing the diverticula (2 lobes) and the pyloric 
sac. 
the chief digestive organs in the early forms of animal life ; for, as 
far as these investigations have progressed, there seems to be no 
organ in the Invertebmta to answer to the liver of higher forms. 
7. On the Thomson Effect in Iron. By Prof. Tait. 
