santhakumaran (19 resultados)

Soft cover. Condición: Very Good. Wrappers have faint crease; tight, text clean. 30 p., illustrated. [br 11].

Soft cover. Condición: Very Good. Wrappers have faint crease; tight, text clean. 36 p., illustrated. [br 11].

Soft cover. Condición: Good. Bottom of back cover has mimeographed mailing label addressed to malacologist Ruth D. Turner; volume has wear; binding has light soil; tight, text clean. 41 p., illustrated. [b 725].

Wrappers. Condición: Good. Bottom of back cover has mimeographed mailing label addressed to malacologist Ruth D. Turner; volume has wear; spine is chipped; spine area has age browning; tight, text clean. 58 p., illustrated. [strs: blank white spine].

Hardcover. Condición: New. ISBN:9788126944071,152pp.

Soft cover. Condición: Good. Binding has light soil; volume has wear; tight, text clean. 46 p., 8 p. of plates. Oversize [br 2].

Condición: As New. Unread book in perfect condition.

Paperback. Condición: New. Marine borers, particularly the shipworms, as destroyers of timber, par excellence, are well known from very ancient times. They attacked the wooden hulls of ships with such intensity that the weakened bottom planks broke up even due to a mild impact caused by hitting a rock or any floating objects inducing shipwrecks. Even the survival of sunken ships as wrecks depends on the mercy of wood-destroying organisms, which may turn these 'port-holes' to history into meaningless junks. The silent saboteurs, involved in several early shipwrecks, are the molluscan and crustacean borers, aided by bacteria and fungi. This paper presents an account of the marine wood-borers, together with a historical review of literature on their depredation on wooden ships, and on protective methods adopted from antiquity to modern times. The seriousness with which early mariners faced the problem of bio-deterioration and the fear the wood-borers created in their minds have been brought to light with, in some cases, excerpts from their journals and books. The anxiety and concern for protecting the ships from the ravages of wood-borers and for their own safety, as evidenced from their accounts, are discussed. Classification of various groups of marine wood-borers with notes on characters of systematic value and a complete list of species so far recorded in literature have been included under Appendix I and II. Methods employed to prevent damage to the boats included deep-charring, coating with pitch, coal-tar, whale oil and mustard oil with lime; scupper nailing ('filling'); sheathing with animal skin, hair, tarred paper, wooden boards (untreated or soaked in coal tar, Ferrous sulphate, Copper sulphate or Lead monoxide); sheathing with metals (Lead or Copper sheets); plastic, neoprene coated ply-woods; and painting with Copper oxide, Pentachlorophenol or phenylarsenious oxide. None of these imparts complete protection. Recent archaeological investigations carried out in British waters, especially on 'Mary Rose', are also summarised. It is suggested that, though borers are instrumental in inducing ship-wrecks thereby enriching the materials for archaeological studies, excavations at known ship-wreck sites should be augmented to unearth valuable historical data, before they are lost to satisfy the insatiable appetite of these pests.

Condición: New.

Paperback. Condición: Brand New. 62 pages. 10.00x7.25x0.25 inches. In Stock.

Condición: New. In.

Paperback. Condición: New.

Condición: New.

Condición: As New. Unread book in perfect condition.

Hardcover. Condición: New. Brand New! Fast Delivery "International Edition " and ship within 24-48 hours. Deliver by FedEx and Dhl, & Aramex, UPS, & USPS and we do accept APO and PO BOX Addresses. Order can be delivered worldwide within 4-6 Working days .and we do have flat rate for up to 2LB. Extra shipping charges will be requested This Item May be shipped from India, United states & United Kingdom. Depending on your location and availability.

Kartoniert / Broschiert. Condición: New. This paper presents an account of the marine wood-borers, together with a historical review of literature on their depredation on wooden ships, and on protective methods adopted from antiquity to modern times.

9 pp., 2 figs, gr. 8.

Paperback. Condición: New. Marine borers, particularly the shipworms, as destroyers of timber, par excellence, are well known from very ancient times. They attacked the wooden hulls of ships with such intensity that the weakened bottom planks broke up even due to a mild impact caused by hitting a rock or any floating objects inducing shipwrecks. Even the survival of sunken ships as wrecks depends on the mercy of wood-destroying organisms, which may turn these 'port-holes' to history into meaningless junks. The silent saboteurs, involved in several early shipwrecks, are the molluscan and crustacean borers, aided by bacteria and fungi. This paper presents an account of the marine wood-borers, together with a historical review of literature on their depredation on wooden ships, and on protective methods adopted from antiquity to modern times. The seriousness with which early mariners faced the problem of bio-deterioration and the fear the wood-borers created in their minds have been brought to light with, in some cases, excerpts from their journals and books. The anxiety and concern for protecting the ships from the ravages of wood-borers and for their own safety, as evidenced from their accounts, are discussed. Classification of various groups of marine wood-borers with notes on characters of systematic value and a complete list of species so far recorded in literature have been included under Appendix I and II. Methods employed to prevent damage to the boats included deep-charring, coating with pitch, coal-tar, whale oil and mustard oil with lime; scupper nailing ('filling'); sheathing with animal skin, hair, tarred paper, wooden boards (untreated or soaked in coal tar, Ferrous sulphate, Copper sulphate or Lead monoxide); sheathing with metals (Lead or Copper sheets); plastic, neoprene coated ply-woods; and painting with Copper oxide, Pentachlorophenol or phenylarsenious oxide. None of these imparts complete protection. Recent archaeological investigations carried out in British waters, especially on 'Mary Rose', are also summarised. It is suggested that, though borers are instrumental in inducing ship-wrecks thereby enriching the materials for archaeological studies, excavations at known ship-wreck sites should be augmented to unearth valuable historical data, before they are lost to satisfy the insatiable appetite of these pests.