334 Obituary — Gustaf Lindstrom. 



Sir Eoderick, accompanied by M. de Verneuil, visited the island and 

 ranged its strata, along with the other old ' transition rocks ' of 

 Sweden, in his newly-founded realm * Siluria.' This fact acted upon 

 me as a fresh revelation, and indicated the path upon which to 

 proceed." It vras no doubt also Murchison's visit which suggested 

 his enquiry into the elevation of Gotland, the subject of his first 

 paper (1852). 



But Lindstrom, though he continued to the last to study the 

 geological relations of the Grotland rocks, did not become a mere 

 stratigraphical palseontologist. In 1848 he commenced student at 

 Upsala University and took the opportunity of attending a course of 

 lectures delivered by Loven in Stockholm. Thus was impressed on 

 him the need to the palaeontologist of a thorough understanding of 

 living animals, and so, after taking his doctor's degree in 1854, he 

 served for a time as extraordinary amanuensis at the zoological 

 museum of the University, and published purely zoological papers — 

 on the invertebrate fauna of the Baltic, on the larva of Peltogaster, 

 and on the development of Sertiilaria. In 1856 he accepted a post 

 as school - teacher in Wisby, and in 1858 a mastership at the 

 Grammar School in that town. During these years he translated 

 a textbook of zoology by H. Masius, and produced his " Geologiens 

 Grunder," which was an adaptation of the works of Lyell to Swedish 

 students, and contained numerous original illustrations from the 

 geology of Sweden ; it speedily ran through two editions, and did 

 much to increase the study of geology in that country. 



Now settled in Wisby, Lindstrom, without dropping his zoological 

 researches, as proved by a paper on the fish of Gotland (1867), 

 devoted more attention to the fossils of the island. He began with 

 the Brachiopoda (1860), but soon turned to the Coelentera, and in 

 1865 published the first of that valuable series of papers on the 

 rugose corals which led up to his memoir on the operculate corals 

 of the Palaeozoic formations (1883). These papers, while disclosing 

 hitherto unsuspected facts of coral structure, finally solved the problem 

 of the systematic position of the peculiar Calceola, previously regarded 

 as an aberrant brachiopod. A remarkable type of madreporarian 

 was fully described by him in 1868 under the name Calostylis, and 

 again discussed in his memoir on the Anthozoa perforata of Gotland 

 (1870). He wrote also on the tabulate corals, and was at the same 

 time investigating the deep - sea corals of the Atlantic. To 

 complete the account of his work on the corals, we may mention 

 his papers on Silurian corals from Russia (1882), on Bhizophyllum 

 (1884), on Prisciturhen (1889), on the 'Corallia baltica' of Linnseus 

 (1895), a description of some Silurian corals from Gotland, including 

 the new genera Nodulipora, Holopliragma, and Dinophyllum, with re- 

 descriptions of his Helminthidium, Pachypora, Polyorophe, Actinocystis, 

 and others (1896), on a Tetradium from Beeren Eiland (1899), on 

 the Neocomian Thecocyathus Nathorsti from King Charles Land 

 (1900), and his great memoir on the Heliolitidfe (1899). 



But before these last-mentioned papers were written occurred the 

 death of the Keeper of the fossil Invertebrata in the State Museum 

 at Stockholm, N. P. Angelin, and the Academy of Sciences appointed 



