Selecting and Organizing Recipes in Late Antique and Early Byzantine Compendia of Medicine and Alchemy

Ancient recipes are usually short texts; one can easily find more than one recipe written on a single papyrus sheet or on the page of a Byzantine manuscript. Despite their brevity, however, they open an invaluable window onto a wide array of techniques and practices used to manipulate the natural world. Ancient recipes could pertain … Continue reading Selecting and Organizing Recipes in Late Antique and Early Byzantine Compendia of Medicine and Alchemy

Punnett Squares and Hybrid Crosses: How Mendelians Learned Their Trade by the Book

In 1901, Erich von Tschermak (1871–1962) produced a critical edition of Gregor Mendel’s (1822–1884) paper on “Versuche über Pflanzen­hybriden”; and in the same year, William Bateson (1861–1926) submitted an English translation entitled “Experiments in Plant Hybridization” to the readers of the Journal of the Royal Horticultural Society.[1] Tschermak’s edition appeared as volume 121 of the … Continue reading Punnett Squares and Hybrid Crosses: How Mendelians Learned Their Trade by the Book

Recipes for Recombining DNA. A History of ‘Molecular Cloning: A Laboratory Manual’

Since Warren Weaver coined the term “molecular biology” in the late 1930s, technological innovation has driven the life sciences, from the analytical ultracentrifuge to high-throughput DNA sequencing. Within this long history, the invention of recombinant DNA techniques in the early 1970s proved to be especially pivotal. The ability to manipulate DNA consolidated the high-profile focus … Continue reading Recipes for Recombining DNA. A History of ‘Molecular Cloning: A Laboratory Manual’