With Ten Plates, Royal 4to, 5s. 
CONTRIBUTIONS TO THE KNOWLEDGE OF RHABDOPLEURA 
AND AMPHIOXUS. 
By Sir RAY LANKESTER, K.C.B., M.A., LL.D., F.R.S. 
London: J. & A. Churchill, 7 Great Marlborough Street. 
Quarterly Journal of Microscopical 
Science. 
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The issue of Supplement Numbers being found inconvenient, 
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valuable material, it has been decided to publish this Journal at 
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