Bibliographical Notices. 199 
notice well remembers the long hours of work devoted to it in the 
Survey Office in Jermyn Street, the illustrious investigator, then full 
of years and honours, having thought it necessary to prepare the 
work in its minutest details for the publisher with his own hands— 
an example that might well be followed by some of our younger 
geologists, who, while bold in speculation, are not always so anxious 
to illustrate their opinions graphically as they might be. 
In 1869 Sir William resigned the directorship of the Survey, but 
continued to occupy himself at intervals with geological investiga- 
tions, in part caused by new and controversial views as to some of 
the earlier work on the eastern townships, which was incomplete 
when he left the colony for the last time in August 1874. 
During the winter of that year, passed with his sister in South 
Wales, the disease to which he had been some time subject made 
rapid progress; and thenceforward, with a few brief intervals of 
improvement, he became progressively weaker, and finally passed to 
his rest on the 22nd of June 1875, in the 78th year of his age. 
As an investigator into the intricacies of stratigraphical structure 
Logan was perhaps without an equal; and in the establishment of 
exact geological mapping as now practised in the British and other 
national Surveys his work was second only to that of his illustrious 
contemporary, Sir Henry de la Beche. 
The author, though evidently without much personal knowledge 
of the subject of his memoirs, has done his work well, especially in 
the numerous selections made from journals and letters. Some of 
the latter, otherwise properly inserted at the end of the volume, con- 
tain details that might have been judiciously omitted. H. B. 
A Monograph of North-American Phyllopod Crustacea. By A. 5. 
Pacxarp, Jun. 8vo. Washington: 1883. Extracted from the 
Twelfth Annual Report of the U.S. Geological and Geographical 
Survey. F. V. Hayden, U.S. Geologist in Charge. 
Tus is a very comprehensive, well worked, and useful Monograph, 
based largely, but not wholly, on the consideration of North-Ame- 
rican forms, 4nd comprising :—I. The classification of the living 
Phyllopodous species; II. The geological succession of fossil forms ; 
III. Geographical distribution of the existing species; IV. External 
and internal anatomy ; V. Development and metamorphoses ; VI. 
Relation to their environment; VII. Relations of the Phyllocarida 
(Nebalia &c.) to the Phyllopoda; and VIII. Bibliography. The 
following is the system and order of treatment in detail :— 
I. Puytiopopa, Latreille (p. 296), history and characters. Family 
Limnadiade, Baird (p. 297). Subfamily Limnetine, Packard, genus 
Luivetis, Lovén (p. 298); species (American) Gouldw, Baird, 
mucronatus, Packard ; brevifrons, Pack., gracilicornis, Pack. Sub- 
family Estheriane, Pack. Genus Esrupria, Riippell (p. 303): 
American species, californica, Pack., Newcombt, Baird, compleai- 
manus, n. sp. meaicana, Claus, Morse, Pack., Belfragei, Pack., 
Jonesii, Baird. Genus Limnapta, Brongniart (p. $11): American 
