BIBLIOGRAPHY 



6-io 



Charles Stoddee: Concretions. Proceedings of the Boston Society of Nat- 

 ural History, volume VI, 1857, pages 137-139. 



Miss Marie Stopes and D. M. S. Watson : On the present distribution and 

 origin of the calcareous concretions in coal-seams, known as "Coal- 

 Balls." Transactions of the Royal Philosophical Society, series B, 

 1909, pages 167-218, plates xvii-xix. 



W. SwANSTON : Notes on some clay concretions from the Connecticut Valley, 

 United States of America. Report and Proceedings of the Belfast 

 Natural History Society, 1900-1901, pages 49-50. 



H. H. SwiNNERTON I Keupcr Basement Beds near Nottingham. Proceedings 

 of the Geological Association, volume XXIX, 1918, page 20. 



Ralph S. Tarr : Economic Geology of the United States. Clay ironstone, 

 page 19 ; Concretionary action and ore deposits, 1894, pages 80-89, 

 figure 9. 



W. A. Tarr: Notes on concretions. (Abstract.) Science, new series, volume 

 51, May, 1920, page 520. 



Sanborn. Tenney : Geology for teachers, classes, and private students, 1865, 

 pages 205, 206, figures 173, 174. 



Sir C. Wr\^LLE Thomson : Voyage of H. M. S. Challenger. Proceedings of 

 the Royal Societj^ of London, volume XXIV, 1876, pages 33, 39, 464. 

 Voyage of the Challenger. The Atlantic, volume 1, 1878, page 189. 

 (Mostly on deep-sea concretions.) 



Josephine Tilden : Some new species of Minnesota algie which live upon cal- 

 careous or siliceous Matrix. Botanical Gazette, volume XXIII, 1897, 

 pages 95-104, plates vii-ix. 



J. E. Todd : Log-like concretions and fossil shores. American Geologist, vol- 

 ume XVII, 1896, page 347, plate xii. 

 Concretions and their geological effects. Bulletin of the Geological So- 

 ciety of America, volume 14, 1903, pages 353-368, with 5 plates. 



Charles W. Townsend : A Labrador spring, page 60, and plate opposite page 

 60. Boston, 1910. 



J. Stanley Tute : On some singular nodules in the Magnesian limestone. 

 Proceedings of the Yorkshire Geological and Polytechnic Society, vol- 

 ume XII, part 3, 1893, pages 245, 246. 



J. Udden and D. McN. Phillips : A reconnaissance report on the geology of 

 the oil and gas fields of Wichita and Clay counties, Texas. Texas 

 University Bulletin number 246 (Scientific series number 23), 1912, 

 308 pages, 26 plates (including maps), 8 figures. 



M. D'AousT ViRLET : Paper read before the Geological Society of France, Geo- 

 logical and Mineral Pamphlets, volume V, number 22, January, 1845. 



Charles D. Walcott : Fossil Medusjie. United States Geological Survey, 

 Monographs, volume XXX, 1898. 

 Precambrian Algonkian algal flora. Smithsonian Miscellaneous Collec- 

 tions 64, number 2, 1914, pages 79-156. 



W. Watts : Singular nodules and ice-worn stones found in the boulder-clay 

 of Piethorn Valley. Transactions of the Manchester Geological So- 

 ciety, volume 22, 1892-1893, pages 436-439. 



Matz Weibull: Nagra manganhaltiga marlekor fran ostergotland. Geol. 

 Foren. i Stockholm Forh., volume 22. 1900, pages 28-32. 



