Jan. 24, 1884] 



NATURE 



299 



12. Zygartida 



Hypothetical Anckstral Tree of the Radiolaria (18S2) 



14. Discoida . 30. C.iiinospha.iida 



II. Pylonida 32. Ccelodendrida 



29. Aulosphrerida 

 13. Lithelida 



2S. Sagenida 

 27. Circaporida 



10. CoUosplirerida 



31. Concbai'ida 



26. Castanellida 



4. Diploconida 20. Cyrtida 



9. Sphaeroida 19. Botryoida 



3. Dorataspida 



18. Spyridina 

 17. Steplianida 



Acanthonida 8. Sphx-iozoida 16. Plectoida 



6. Collozoida 25. Aulacaiithida 



I : I 



7. Thalasso- [ 22. Cannorhaphida 



sphasrida 



25. Challengerida 



24. Lithogromida 



I. Actinelida 5. ThaIas';icollida 



15. Cystidina 



21. Phreodinida 



Actinelius 

 (ancestral form 



of the 

 Acantharia) 



Actissa 



(ancestral form 



of the 

 Spumellaria) 



Cystidium 

 (aiictstral form 



of the 

 Nassellaria) 



Phseodina 



(ancestral form of the 

 Phseodaria) 



Actissa 



(common ancestral form of all Radiolaria) 



UNIVERSITY AND EDUCATIONAL 

 INTELLIGENCE 



Oxford. — The following courses of lectures and instruction 

 ID Natural Science will be held during the present term. In the 

 Department of Physics Prof. Clifton lectures on "The Distribu- 

 tion of Potential in a Circuit," and on the Galvanometer. Mr. 

 Heaton lectures on Elementary Mechanics. Practical instruc- 

 tion in Physics is given daily by Prof. Clifton and Messrs. 

 Heaton and Walker in the Clarendon Laboratory. At Christ 

 Church Mr. Baynes lectures on the Kinetic Theory of Gases, and 

 gives practical instruction in magnetic and electric measurements. 

 At Balliol Mr. Dixon lectures on Elementary Heat and Light. 



In the Chemical Department Prof. Odiing continues his 

 course on the Naphthalene Compounds. The Courses on 

 Organic and Inorganic Chemistry are continued by Dr. Watts 

 and Mr. Kisher. At Christ Church Mr. Vernon Harcourt has a 

 class for Quantitative Analysis. 



Prof. Story-Maskelyne continues his course on Crystallo- 



graphy, and Prof. Prestwich concludes his course on Dynamical 

 Geology, and lectures on Stratigraphical Geology. 



In the Department of Morphology practical instruction is 

 given by Prof. Mo-eley and Messrs. Robertson and Hickson on 

 Human and Comparative Anatomy. Prof. Moseley lectures 

 on the Comparative Anatomy of the Vertebrata, Mr. Hickson on 

 the Elements of Animal Morphology, Mr. Jackson on Mimicry 

 and Parasitism, Mr. Poulton on Descriptive Histology, Mr. 

 Morgan on Odontography, and Mr. Barclay-Thompson on the 

 Anatomy of Amphibia and Reptilia. 



In the Department of Physiology (which is much cramped for 

 room pending the erection of new buildings) Prof. Burdon San- 

 derson lectures on the Nervous System, while practical instruc- 

 tion is given liy the Professor and Mr. Gotch on the Elementary 

 Physiology of the Nervous System and of the Sense Organs, 

 and by Mr. Dixey on Histology. At Magdalen Mr. Yule has 

 a class for instruction in Practical Physiology. 



The new Reader in Anthropology will give a course of six 

 lectures on the Development of Civilisation and the Arts of Life. 



