In 1669, Malpighi published the first systematic dissection of an insect. The manuscript of this work contains a striking water-colour of the silkworm, which is described here for the first time. On repeating Malpighi's pioneering investigation, Swammerdam found what he thought were a number of errors, but was hampered by Malpighi's failure to explain his techniques. This may explain Swammerdam's subsequent description of his methods. In 1675, as he was about to abandon his scientific researches for a life of (...) religious contemplation, Swammerdam destroyed his manuscript on the silkworm, but not before sending the drawings to Malpighi. These figures, with their rich and unique use of colour, are studied here for the first time. The role played by Henry Oldenburg, secretary of the Royal Society, in encouraging contact between the two men is emphasized and the way this exchange reveals the development of some key features of modern science -- replication and modern scientific illustration -- is discussed. (shrink)

The PIWI-interacting RNA pathway, one of the major eukaryotic small RNA silencing pathways, is a genome surveillance system that silences selfish genes in animal gonads. piRNAs guide PIWI protein to target genes through Watson–Crick RNA–RNA base-parings. Loss of piRNA function causes genome instability, inducing failure in gametogenesis and infertility. Studies using fruit flies and mice as key experimental models have resulted in tremendous progress in understanding the mechanism underlying the piRNA pathway. Recent work using cultured silkworm germline cells has (...) also expanded our knowledge of piRNA biogenesis in particular, since these silkworm cells are the only cells of germline origin that can be cultured. In this review, we describe elucidation of the piRNA pathway using cultured silkworm cells as an experimental model by focusing on recent work in biochemistry and structural biology. Earlier studies that made important contributions to the field are also described. PIWI-interacting RNAs are germline-enriched small RNAs that silence transposons to maintain genome integrity. Recently, cultured silkworm germline cells such as BmN4 made great contributions to understand the mechanism underlying piRNA biogenesis in particular. In this review, we highlight the recent progress in biochemical and structural biology. (shrink)

Japanese agricultural scientist Toyama Kametaro’s report about the Mendelian inheritance of silkworm cocoon color in Studies on the Hybridology of Insects spurred changes in Japanese silk production and thrust Toyama and his work into a scholarly exchange with American entomologist Vernon Kellogg. Toyama’s work, based on research conducted in Japan and Siam, came under international scrutiny at a time when analyses of inheritance flourished after the “rediscovery” of Mendel’s laws of heredity in 1900. The hybrid silkworm studies in (...) Asia attracted the attention of Kellogg, who was concerned with how experimental biology would be used to study the causes of natural selection. He challenged Toyama’s conclusions that Mendelism alone could explain the inheritance patterns of silkworm characters such as cocoon color because they had been subject to hundreds of years of artificial selection, or breeding. This examination of the intersection of Japanese sericulture and American entomology probes how practical differences in scientific interests, societal responsibilities, and silkworm materiality were negotiated throughout the processes of legitimating Mendelian genetics on opposite sides of the Pacific. The ways in which Toyama and Kellogg assigned importance to certain silkworm properties show how conflicting intellectual orientations arose in studies of the same organism. Contestation about Mendelism took place not just on a theoretical level, but the debate was fashioned through each scientist’s rationale about the categorization of silkworm breeds and races and what counted as “natural.” This further mediated the acceptability of the silkworm not as an experimental organism, but as an appropriately “natural” insect with which to demonstrate laws of inheritance. All these shed light on the challenges that came along with the use of agricultural animals to convincingly articulate new biological principles. (shrink)

Japanese agricultural scientist Toyama Kametaro's report about the Mendelian inheritance of silkworm cocoon color in Studies on the Hybridology of Insects (1906) spurred changes in Japanese silk production and thrust Toyama and his work into a scholarly exchange with American entomologist Vernon Kellogg. Toyama's work, based on research conducted in Japan and Siam, came under international scrutiny at a time when analyses of inheritance flourished after the "rediscovery" of Mendel's laws of heredity in 1900. The hybrid silkworm studies (...) in Asia attracted the attention of Kellogg, who was concerned with how experimental biology would be used to study the causes of natural selection. He challenged Toyama's conclusions that Mendelism alone could explain the inheritance patterns of silkworm characters such as cocoon color because they had been subject to hundreds of years of artificial selection, or breeding. This examination of the intersection of Japanese sericulture and American entomology probes how practical differences in scientific interests, societal responsibilities, and silkworm materiality were negotiated throughout the processes of legitimating Mendelian genetics on opposite sides of the Pacific. The ways in which Toyama and Kellogg assigned importance to certain silkworm properties show how conflicting intellectual orientations arose in studies of the same organism. Contestation about Mendelism took place not just on a theoretical level, but the debate was fashioned through each scientist's rationale about the categorization of silkworm breeds and races and what counted as "natural." This further mediated the acceptability of the silkworm not as an experimental organism, but as an appropriately "natural" insect with which to demonstrate laws of inheritance. All these shed light on the challenges that came along with the use of agricultural animals to convincingly articulate new biological principles. (shrink)

Taking its point of departure in a childhood memory of Derrida around raising silkworms, this essay explores the urgency invoked in the same memory of ‘conjuring green’. Following the polysemy of the French verb ( conjurer means to ‘ward off’, ‘cause (a spirit or ghost) to appear’, ‘implore’, and literally, ‘swear together’), the conjured green binds the child and later the writer surreptitiously to both the community and language of Islam, in which the colour green evokes the gardens of paradise, (...) and the infinitely differentiated proliferation of plants whose anthology encroaches upon and undermines any ontology. Along the meandering lines of Derrida’s meditation on the conjured, warded-off, mourned and celebrated green, the Qur’anic Muslim’s joy and radiance whose roots are the same as those for ‘vividness’ and ‘flourishing’, are grafted onto Hildegard von Bingen’s viriditas, the greening power or force which the German mystic Hildegard von Bingen understood as the living soul of creation; and Darwin’s discovery of the movement of plans as ‘circumnutation’, a Derridian term avant la lettre, that captures the dynamic of plants in Derrida’s Glas. (shrink)

This book combines loosely "autobiographical" texts by two of the most influential French intellectuals of our time. "Savoir," by Hélène Cixous is an account of her experience of recovered sight after a lifetime of severe myopia; Jacques Derrida's "A Silkworm of One's Own" muses on a host of motifs, including his varied responses to "Savoir.".

Introduction: The role of animals in philosophies of man -- Part I: What's wrong with animal rights? -- The right to remain silent -- Part II: Animal pedagogy -- You are what you eat : Rousseau's cat -- Say the human responded : Herder's sheep -- Part III: Difference worthy of its name -- Hair of the dog : Derrida's and Rousseau's good taste -- Sexual difference, animal difference : Derrida's sexy silkworm -- Part IV: It's our fault -- (...) The beaver's struggle with species-being : De Beauvoir and the praying mantis -- Answering the call of nature : Lacan walking the dog -- Part V: Estranged kinship -- The abyss between humans and animals : Heidegger puts the bee in being -- Strange kinship : Merleau-Ponty's sensuous stickleback -- Stopping the anthropological machine : Agamben's tick-tocking tick -- Psychoanalysis and the science of kinship -- Psychoanalysis as animal by-product : Freud's zoophilia -- Animal abjects, maternal abjects : Kristeva's strays -- Conclusion: Sustainable ethics. (shrink)

L'œuf de ver à soie qui se prête à de nombreuses recherches génétiques et physiologiques a été assimilé à un volume géométrique simple afin qu'on puisse calculer aisément l'aire de sa surface totale et son volume. On a d'abord cherché à justifier le modèle géométrique proposé grâce à une étude expérimentale et statistique. On a ensuite établi les formules mathématiques utiles. Enfin on a discuté de l'approximation donnée par ces formules et de leur signification biologique.The egg of the silkworm (...) which permits a lot of genetical and physiological researches has been assimilated to a simple geometric volume, so that the area of its total surface and its volume might be easily calculated. First we have tried to justify the geometrical model which is proposed by means of an experimental and statistical study. We have then demonstrated the useful mathematical formulas. Finally we have discussed the approximation given by these formulas and their biological significance.Das Seidenraupenei, das viele genetische und physiologische Forschungen ermöglicht, hat man mit einem einfachen geometrischen Modell verglichen, um seine ganze Fläche und sein Volumen leicht rechnen zu können. Zuerst hat man versucht, das vorgeschlagene geometrische Modell dank einer experimentalen und statistischen Arbeit zu rechtfertigen. Dann sind die nötigen mathematischen Formeln festgesetzt worden. Zuletzt hat man die durch diese Formeln gegebenen Annäherungen und ihre biologischen Bedeutung erörtert. (shrink)

Jinakalamali Index: an annotated index to the Thailand part of Ratanapanna's chronicle Jinakalamali. Hans Penth. Pali Text Society, Oxford, and Silkworm Books, Chiang Mai 1994. xx, 358 pp. £13.00.

Jacques Derrida’s ‘Faith and Knowledge’ presents an account of the complex relationship between religion and technoscience that disrupts their traditional boundaries by uncovering both an irreducible faith at the heart of science and an irreducible mechanicity at the heart of religion. In this paper, I focus on the latter, arguing that emphases in Derrida’s text on both the ‘sources’ of religion and its interaction with modern technologies underemphasize the ways in which a general ‘mechanicity’ is present throughout religion. There is (...) no faith, I contend, that is not in some way materially constituted according to a mechanicity operative not only at its origin but continuously and in ever-changing forms, and not only in its interactions with other fields and institutions but within its own structure and daily life. By closely examining ‘Faith and Knowledge’—along with examples from his essay ‘A Silkworm of One’s Own’ and Michael Naas’s Miracle and Machine—I argue that more attention should be paid to the mechanisms, both human and non-human, that populate and perform religion in its factical life. Mechanical bodies and practices are enlisted by religious traditions in order that these traditions continue to exist by continually reconstituting themselves in, for example, the repetitive use of religious objects or the vocal recitation of creeds. Such mechanical acts of religion are not ultimately opposed to the faithful experience that is often taken to be the wellspring of religious life; on the contrary, they are the conditions for the possibility of this experience. (shrink)

The improvement of the welfare of inhabitants of arid and semi-arid lands, either through the enhancement of existing livelihoods or the promotion of alternative ones, and their potential constraints are discussed. Alternative livelihoods are discussed under regenerative and extractive themes with respect to environmental stability. Regenerative (i.e., non-extractive) livelihoods include activities like apiculture, poultry keeping, pisciculture, silkworm production, drought tolerant cash cropping, horticulture, community wildlife tourism, processing of livestock and crop products, agro-forestry for tree products, and micro-enterprises in the (...) informal sector. Examples of livelihoods that are extractive or potentially so include timber production, woodcarving, basketry, brick making, sand scooping, and charcoal making. Suggestions to improve these livelihoods in a sustainable manner are offered. (shrink)

This article explores mechanisms for making poor rural women’s work visible by drawing on Amartya Sen’s intra-family “cooperative conflict” theory to explain the workings of two Bangladesh non-governmental organization’s income-generating programs (rearing poultry and rearing silkworms). On the assumption that cooperation surpasses conflict in the intra-family relations when women’s work is visible, the article identifies factors that influence intra-family conflict and cooperation. At entry, cooperation in a family depends on how successfully the family can make women’s income-generating activities compatible with (...) their existing household responsibilities and with continuation of the male breadwinner’s income source. In women’s continuing work, the level of cooperation depends greatly on the amount and frequency of women’s income and the family’s level of indebtedness. Families with a male breadwinner having a regular income source tended to offer a more cooperative environment to women’s work than those with a breadwinner involved in casual labor. Women’s work as a second regular income source can make their work more visible and contribute to their families’ upward mobility. (shrink)