Abundance of microzooplankton in surface waters of the East Atlantic and Mediterranean in August-September 1970

Abundance of microzooplankton was studied from August to October 1970 in a ship laboratory using the method of concentration of water samples by filtration and then counting living organisms under a microscope. The main groups (in order of decreasing abundance) were as follows: infusorians, nauplii, copepodids, radiolarians, appendicularians, and some others (rotifers, worm and mollusk larvae). Concentration of infusorians rarely exceeded 100 #/l, possibly an underestimate. Nauplii often numbered 20 to 30 #/l. Study of vertical distribution of microzooplankton showed that peak concentrations in the Mediterranean Sea were at depth of 20-30 m regardless of day time. There were 2 peaks in the Atlantic Ocean, one in the 10- to 20-m layer, the other in the 50- to 75-m layer.

[Letter from Andrew Eliot to "My Dear Sir," 14 September 1774]

Two-page letter to an unknown recipient discussing the effects of the Revolutionary War on Boston ("at present it's situation is melancholy"). The letter acknowledges the work of the Continental Congress and that its decisions "will be Law to America," and thanks the "munificence of our Friends in the Southern Colonies." In local news, Eliot mentions that Dr. Samuel Langdon will likely be appointed Harvard's next President, and notes the death of Thomas Hollis, a Harvard benefactor.