82 LIFE OF PROFESSOR HUXLEY chap, vi 



3. Report upon the Development of the Echinoderms. To 

 appear in the Annals for July. 



4. On the Anatomy and Physiology of the Salpae, with four 

 plates. Read at the Royal Society, and to be pubhshed in the 

 next part of the Philosophical Transactions. 



5. On two Genera of Ascidians, Doliolum and Appen- 

 dicularia, with one plate. Read at the Royal Society, and 

 to be published in the next part of the Philosophical Trans- 

 actions. 



6. On some peculiarities in the Circulation of the Mollusca. 

 Sent to M. Milne-Edwards, at his request, to be published in the 

 Annales des Sciences. 



7. On the Generative Organs of the Physophoridae and 

 DiphydK. Sent to Prof. Miiller of Berlin for publication in his 

 Archiv. 



By the end of the year he had four more to report: — 

 I. On the Hydrostatic Acalephae ; 2. On the genus Sagitta, 

 both published in the Report of the British Association for 

 185 1 ; 3. On Lacinularia Socialis, a contribution to the 

 anatomy and physiology of the Rotifera, in the Transactions 

 of the Microscopical Society; 4. On Thalassicolla, a new 

 zoophyte, in the Annals of Natural History. Next year he 

 read before the British Association a paper entitled " Re- 

 searches into the Structure of the Ascidians," and a very 

 important one on the Morphology of the Cephalous Mol- 

 lusca, afterwards published in the Philosophical Transactions. 

 In addition he had prepared a great part of his longer work 

 for publication ; out of twenty-four or twenty-five plates, 

 nineteen were ready for the engraver when he wrote his 

 appeal to the Duke of Northumberland. In this same year, 

 1852, he was also awarded the Royal Medal in Physiology 

 for the value of his contributions to the Philosophical Trans- 

 actions. 



In 1853, besides seeing some of these papers through 

 the press, he published one on the existence of Cellulose in 

 the Tunic of Ascidians, read before the Microscopical So- 

 ciety, and two papers on the Structure of the Teeth; the 

 latter, of course, like a paper of the previous year on Echi- 

 nococcus, being distinct from the Rattlesnake work. The 

 greater work on Oceanic Hydrozoa, over which the battle 



