Septembee 15, 1922] 



SCIENCE 



303 



park, preserving adequately for all time a rep- 

 resentative redwood forest in its primitive state, 

 will probably be established. The task of the 

 Save the Eedwoods League is to cooperate with 

 the state in assuring the preservation of the 

 Highway of the Giants and to aid the federal 

 government toward establishing the national 

 park. 



The league is interested also in promoting the 

 preservation and reforestation of cutover red- 

 wood lands. The redwood is a tree that repro- 

 duces by sprouting from the stump, and in time 

 produces beautiful second growth trees. While 

 these are in no way comparable in size or 

 grandeur with the ancient redwoods that have 

 taken 1,000 to 1,500 years to mature, never- 

 theless if it is possible to save the finest of the 

 virgin stands of redwoods, the remaining red- 

 wood area will ultimately be 'covered with 

 attractive second gi'owth. 



Sinee the league can not hope to raise more 

 than a fraction of the needed sum through 

 state appropriation or private contributions, it 

 advocates federal action toward the establish- 

 ment of such a pailk. 



CERAMIC DAY 



The American Ceramic Society has issued 

 the following letter to members of the society: 



Our society has provided the program for one 

 of the days during the exposition week (11-16 

 inclusive) known as Ceramic Day. This will be 

 on Friday, September 15. 



President Frank H. Riddle will appear on the 

 opening program of the exposition with the pres- 

 idents of other technical societies. 



Messrs. E. P. Poste and Eoss C. Purdy will ap- 

 pear on the special program on "Specifications." 

 Mr. Poste will discuss specifications for enameled 

 chemical ware and Mr. Purdy will describe the 

 problems in writing specifications for refractories. 



The partial program for Ceramic Day, Sep- 

 tember 15 is: 



Sigh temperature cements, by W. H. Gaylord, 

 Jr., Quigley Furnace Specialties Company. 



Application of magnetic separator in ceramic 

 industries, by E. S. Hirschberg, Dings Magnetic 

 Separator Company. 



Preparation of clays and minerals for ceramic 

 purposes, by J. D. Dicket, chemist, Industrial 

 Filteration Corporation. 



Apparatus for quicMy determining fineness of 

 grind, by Eric Turner, Trenton PUnt and Spar 

 Company. 



Feldspar Colloquium: W. H. Landers, George 

 M. Darby, O. 0. Bowman, 2d, "V. A. Staudt, 

 C. E. MooRE, C. M. Franzheim and others. 



Manufacture of gray enameled ware, by H. C. 

 Arnold. 



Whiting for ceramic uses, by A. E. Williams. 



Gas producers for glass works, by C. B. Chap- 

 man, Chapman Engineering Company. 



Witchery of glazes, by Paul E. Cox. 



Architectural faience and its artistic possibili- 

 ties, by Conrad Dresslee. 



Organization of a decorative ceramic research 

 department ; financial and manufacturing consid- 

 erations, by Frederick H. Ehead. 



R. D. Landrum 

 Chairman of Committee on Program. 



THE GEOLOGICAL SOCIETY OF AMERICA 



At the last annual meeting of the Geological 

 Society of America held at Amherst, the fel- 

 lows listened to an instructive symposium on 

 Isostasy, in which it was clearly brought out 

 that this is not the primary cause in the making 

 of folded mountains. There is a greater ante- 

 cedent cause, and it is the later adjustments 

 in the mountains that are due to isostasy. 



It is therefore proposed that at the meeting 

 of the society to ibe held at the University of 

 Michigan next December, there be held a sym- 

 posium on "The Structure and History of 

 Mountains and the Causes for their Develop- 

 ment," dealing with the following questions: 

 What are the chief internal structures of 

 mountains'? To what extent is lateral com- 

 pression responsible for folding and uplift? 

 What causes the lithosphere locally to upheave 

 and to fold into mountains? These discus- 

 sions will be led by 



Charles Schuchert — The sites and nature of the 

 American geosynclines. 



Chester E. Longivell — Professor Kober 's theory , 

 of mountain structure and mountain making. 



William H. Hobbs — The Asiatic arcs. 



Arthur Keith — The Appalachians. 



Jay B. Woodworth — The mountains of New 

 England and the Maritime Provinces of Canada. 



Willis T. Lee — The Frout Eanges of Colorado 

 and New Mexico. 



