Gold certificates were a United States paper currency between 1863 and 1933. Each certificate gave its title to a corresponding amount of gold coin as established by the Coinage Act of 1834. The Series of 1882, shown here, was the first series to be payable to the bearer; unlike previous issues, anyone could redeem these certificates for the equivalent in gold. Shown here is a $20 banknote, depicting James Garfield.
Roses is a 1893 painting by P.S. Krøyer, one of the most successful artists of the community known as the Skagen Painters. The work is one of several that shows Krøyer's wife Marie. In this painting, Marie is seated in a deckchair under a large rose bush in the garden of the couple's house in Skagen, with their dog Rap asleep beside her. The painting was sold for 3.1 million Danish kroner in 1985 and was donated anonymously to the Skagens Museum in 2008.Painting: P.S. Krøyer
"Our illustration gives an interior view, so to speak, of a gun-position, in the British lines at the front, screened by head-cover to escape observation by German airmen. The overhead covering is seen with its deceptive thatch, apparently of straw, and the gunners are shown in action loading the gun. The man to the left is setting the time-fuse of a shrapnel shell."Photograph: Photopress; restoration: Adam Cuerden
Born in the countryside of Småland, Linnaeus received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He studied abroad between 1735 and 1738, and published the first edition of his Systema Naturae in the Netherlands. Upon his return to Sweden, he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect and classify animals, plants, and minerals, and published several volumes. At the time of his death, he was one of the most acclaimed scientists in Europe.Painting: Alexander Roslin
The water rail (Rallus aquaticus) is a bird of the rail family which breeds in well-vegetated wetlands across Europe, Asia and North Africa. Northern and eastern populations are migratory, but this species is a permanent resident in the warmer parts of its breeding range. The adult is 23–28 cm (9–11 in) long, and breeds in reed beds and other marshy sites with tall, dense vegetation. These rails are vulnerable to flooding or freezing conditions, loss of habitat and predation by mammals and large birds. The introduced American mink has exterminated some island populations, but overall the species' large range and numbers mean that it is not considered to be threatened.Photograph: Pierre Dalous
The National Press Monument is a monument and museum to the national Indonesian press. Established in 1978, the monument is located in Surakarta, Central Java, and operated by the Ministry of Communications and Information. The complex consists of an old society building as well as several subsequent expansions. It has a collection of over a million newspapers and magazines, as well as a variety of exhibitions and artefacts related to the history of the press in Indonesia. Facilities include a multimedia room, free-to-read newspapers, and a library.Photograph: Chris Woodrich; edit: David Iliff