THE FLORA OF NORTH AMERICA. 33 
tion to the diatoms, desmids and other fresh water algw. He 
partook in a geological journey in 1868—’69 to North America 
and the West Indies. 
Diatoms from the West Indian Archipelago, 1878. 
Diatoms collected during the expedition of the Vega. 
Farskvattens diatomaceer fran Grénland och Argentinska Republiken, Fe 
On the diatoms collected during the Arctic expedition of Sir George 
1883. 
Diatoms from Baffins Bay and Davis Strait, 1896. 
Synopsis of the Naviculoid Diatoms, 1894. 
Johan August Berlin was born at Malsta, Upland, Sweden, 
the 7th of August, 1851, received his degree of Ph. D. in 1888. 
He was the botanist of the Nordenskjéld expedition to Greenland 
in 1883. 
Karlvaxter, insamlade under den svenska expeditionen till Grénland 1883, 
Alfred Gabriel Nathhorst was born at Vaderbrunn, Sdéder- 
manland, Sweden, the 7th of November, 1850, took the degree of 
Ph. D. in 1874, and became docent the same year. He became 
professor and director of the Paleophytological Museum, Stock- 
holm, in 1884. He has made journeys to Spitzbergen in 1870, 
1882 and 1898, to Greenland (with Nordenskjéld) in 1883, and to 
East Greenland in 1899. Heis a prominent paleontologist and 
phytogeographer. 
Botaniska anteckningar fran nordvistra Grénland, 1884. 
Forssatta anmarkningar om den gronlandska vegetationens historia, 1891. 
Tva somrar i Norra Ishafvet. 
Johan Georg Robert Boldt was born at Kuopio, Finland, the 
8rd of January, 1861, took his Ph. D. examinations in 1891, 
and has been instructor of geography and history at Bjérneborg 
since 1899. He is a specialist on alge, especially the desmids. 
Desmider fran Grénland, 1888. 
C. West Indies. 
Albert Heinrich Riise was born the 11th of September, 1810, 
on Aeré, Denmark. He became apothecary on the island of St. 
Thomas, where he remained until 1870. He died the 18th of 
October, L882. He made important collections, which are pre- — 
served at Copenhagen. 
