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subject is most amply and ably treated. We shall return to 
this book: hereafter. 
Structure of Cordylophora lacustris.—This lovely polyp, 
which is so common in the Victoria Docks, has been made the 
subject of a monograph by Professor Franz Kilhard Schulze, of 
Rostock. He uses osmic acid and colouration with Ranvier’s 
picrocarminate of ammonia (prepared by neutralising ammo- 
niacal solution of carmine with picric acid), and has made 
important histological observations. Professor Allman’s 
splendid work (Ray Society) on the Hydroid Polyps is also 
just out, and the first part contains Cordylophora amongst 
other forms ; so that those who wish for a turn at Celenterate 
morphology have material and guides ready to hand. 
Proceedings of Societies—Owing to pressure of matter (this 
being the concluding volume for the year), we are compelled 
to defer the publication of the Dublin Club Minutes until 
our next, 
