24 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
scopic examination and estimation of plankton samples, 
were given either in the laboratory or on the yacht. 
A couple of lectures, at the beginning of the course, 
on the history and methods and the problems and diffi- 
culties of Oceanography, and one at the conclusion on its 
applications to sea-fisheries research, were given by 
Professor Herdman, who also conducted some of the shore 
and sea expeditions. The rest of the work, lectures and 
demonstrations and detailed laboratory practice, was 
carried on separately or jointly by Dr. Dakin and Dr. 
Roaf. If there is any demand for it this course will 
probably be repeated next summer. It may be of interest 
to insert here as a record a photograph (fig. 4) of the 
students and instructors of our first Oceanography Class. 
It may be useful, as this was a pioneer course of a 
somewhat experimental nature, to put on record the 
following additional details of the work that was actually 
carried out. The programme was as follows :— 
Thursday— Introductory lecture on the history and nature of Oceano- 
graphy (Professor Herdman). 
Lecture on Chemistry of Sea-water (Dr. Roaf). 
Demonstration on Hydrographic Instruments (Dr. Dakin). 
Friday— 10 a.m. Lecture on Salinities and Temperatures of the 
Sea (Dr. Dakin). 
Followed by practical work in the Laboratory. 
Afternoon. Collecting Expedition to the limestone reefs 
at Port St. Mary. 
Saturday— 10a.m. Lecture on methods of Oceanography (Professor 
Herdman). 
Followed by Laboratory work. 
Monday— 10 a.m. Lecture and Demonstration on Plankton 
quantitative and other nets (Dr. Dakin). 
Followed by inspection and practice with apparatus on 
the Yacht. 
Collecting Expedition on the Shore in the Afternoon and 
Evening. 
Tuesday— 9a.m. Expedition on Fishery Steamer, to see trawling, 
plankton and hydrographic work. 
Afternoon. Work in Laboratory. 
Wednesday—Morning. Plankton Expedition on S8.Y. “‘ Ladybird.” 
3 p.m. Lecture on Gases and Alkalinity of Sea-water 
(Dr. Roaf). 
