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Gusinoe Ozero (Town), Datsan, Main Temple (1858-70), West Facade, Gusinoe...
This photograph of the main temple at the Gusinoozersk Buddhist monastery (datsan) was taken in 2000 by Dr. William Brumfield, American photographer and historian of Russian architecture, as part of...
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The Quintessence of Medicine
The author of this treatise, Isma‘īl ibn Muhammad al-Husayn al-Jurjānī (circa 1042–1136), also known as al-Sayyid Isma‘īl, was one of the most-famous physicians and prolific writers on medicine of his...
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Quintessence of Calculation
The author of this mathematical treatise, Bahā' al-Dīn Al-‘Amilī (1547–1621), is considered one of the leading intellectuals of 17th-century Safavid Persia (present-day Iran). He was born in Baalbek...
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The Medical Formulary of Al-Samarqandī
Little is known about the author of this treatise on medical remedies, Nağīb al-Dīn Al-Samarqandī, apart from the fact that he was killed during the pillage of Herat (present-day Afghanistan) by the...
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Small Treatise on the Calculation of Tables for the Construction of Inclined...
The challenge of calculating the positions and movements of celestial bodies for the purpose of preparing astronomical tables helped to stimulate the development of very sophisticated mathematical...
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The Lifting of the Veil in the Operations of Calculation
The establishment of the Berber-Muslim dynasty of the Almohads in North Africa and Andalusia in the 12th century coincided with the decline in scientific advances in many fields of knowledge,...
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The Keys of Mercy and the Secrets of Wisdom
This manuscript is an invaluable source for understanding alchemical doctrines and practices in the Islamic world during the Middle Ages. Its author, the polymath Mu‛ayyad al-Dīn al-Tuġrā’ī, was born...
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Facts on the Calculation of Degrees and Minutes
This manuscript by Badr al-Dīn Muhammad ibn Muhammad ibn Ahmad ibn Muhammad ibn al-Ġazal (1423–1506) contains a commentary on, and abridgement of, the astrological treatise on the calculation of the...
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Glosses of al-Hifnī on the Yāsamīnīyya
The mathematical tradition that developed in North Africa during the Middle Ages continued to attract the interest of scholars in subsequent centuries. Medieval treatises were extensively read and...
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The Desire of the Students for an Explanation of the Calculator's Craving
This manuscript offers a clear example of the liveliness of the North African mathematical tradition under the Muslim-Berber dynasties that ruled over the Islamic West from the 12th century to the...
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The Blossoms of Thoughts Regarding the Precious Stones
Azhār al-Afkār fī Jawāhir al-Ahjār (The blossoms of thoughts regarding precious stones) is considered the most detailed and complete treatise of the Middle Ages on stones and their properties....
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The Commentary of the Šayḫ, the Head, the Extremely Knowledgeable Aḥmad...
The Arabic mathematical tradition, which flourished during the Middle Ages, transmitted and enriched the knowledge derived from Greek and Indian sources. Arabic mathematicians further developed these...
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Mother Church: Front View
The Thereza Christina Maria collection is composed of 21,742 photos assembled by Emperor Pedro II (1825-91) throughout his life and donated by him to the National Library of Brazil. The collection...
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New Cemetery
The Thereza Christina Maria collection is composed of 21,742 photos assembled by Emperor Pedro II (1825-91) throughout his life and donated by him to the National Library of Brazil. The collection...
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Itamaraty Waterfall
The Thereza Christina Maria collection is composed of 21,742 photos assembled by Emperor Pedro II (1825-91) throughout his life and donated by him to the National Library of Brazil. The collection...
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Praça da Confluência Park and Residence of the Barão de Mauá
The Thereza Christina Maria collection is composed of 21,742 photos assembled by Emperor Pedro II (1825-91) throughout his life and donated by him to the National Library of Brazil. The collection...
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Imperial Palace and Surroundings
The Thereza Christina Maria collection is composed of 21,742 photos assembled by Emperor Pedro II (1825-91) throughout his life and donated by him to the National Library of Brazil. The collection...
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Strolls Around Tobol'sk in 1830
Tobol'sk was founded by the Cossack Danila Chulkov in 1587 on the site of a Tatar town. It is considered the father of Siberian cities. Thanks to its position on the Great Siberian Post Road, Tobol'sk...
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Map of Agricultural Areas of the Siberian Region
This Soviet-era map shows the agricultural areas of Siberia, district borders, railroads, rivers, lakes, district centers, and cities. Although much of Siberia is unsuited for farming, good conditions...
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Geognostic Map of the Localities of Irkutsk, Verkholensk, and Balagansk...
The first geological (geognostic) maps in Russia were produced in the 1850s. This map of the Irkutsk region was published by the Siberian Department of the Imperial Russian Geographic Society under...
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