Read The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint)

The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint)

Danish Ingolf-Expedition

4.9/5 (17695 ratings)

Description:Excerpt from The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the GovernmentThe close examination of the Hydrocorallines meets perhaps with more difficulties than the study of the skeleton - bearing Hexacorallia, owing partly to the porous skeleton of the colonies, partly to the delicate nature of the organisms. The characteristics can be determined roughly by means of Dr. Koch's detailed method in which thin sections of the colonies are prepared by grinding with the stained soft parts in situ. The structure of the skeleton can also in part be studied by breaking the colonies as Hickson (1912 p. 891) seems from'the following remark to have done. The way in which it is possible to study the shape of the gasteropore styles is to make a vertical fracture in a plane parallel with the long axis of a branch. In a large percentage of such fractures the whole length of at least one gasteropore with its style will be exposed. It is evident however, that this method is not suited to form the base of a more thorough and systematic investigation of the skeletal parts of the colony. Where it is necessary for the observer to make his results free from chance irregularities he must have recourse to the somewhat slower method of grinding. In the present studies this latter method has throughout been used in the examination of the skeleton. The soft parts are first removed by means of eau-de-labarraque, and pieces of the colony have then been ground down on a fine and level Whetstone as far as seemed necessary in each single case. For general systematic work it is usually sufficient to grind down a branch to about its median longi tudinal plane; in a St'ylaster, for example, the majority of the gasterostyles will in most cases appear quite free in the middle of the gasteropore. On the finely polished ground surface it will also be possible to study the course of the fine canals. Where there is question of examining the finer structure of the calcareous skeleton, however, this procedure is not sufficient and it is necessary in addition to have thin sections of the same kind as the geologists use in their studies.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint). To get started finding The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

Pages: —

Format: PDF, EPUB & Kindle Edition

Publisher: —

Release: —

ISBN: 0656036540

Description: Excerpt from The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the GovernmentThe close examination of the Hydrocorallines meets perhaps with more difficulties than the study of the skeleton - bearing Hexacorallia, owing partly to the porous skeleton of the colonies, partly to the delicate nature of the organisms. The characteristics can be determined roughly by means of Dr. Koch's detailed method in which thin sections of the colonies are prepared by grinding with the stained soft parts in situ. The structure of the skeleton can also in part be studied by breaking the colonies as Hickson (1912 p. 891) seems from'the following remark to have done. The way in which it is possible to study the shape of the gasteropore styles is to make a vertical fracture in a plane parallel with the long axis of a branch. In a large percentage of such fractures the whole length of at least one gasteropore with its style will be exposed. It is evident however, that this method is not suited to form the base of a more thorough and systematic investigation of the skeletal parts of the colony. Where it is necessary for the observer to make his results free from chance irregularities he must have recourse to the somewhat slower method of grinding. In the present studies this latter method has throughout been used in the examination of the skeleton. The soft parts are first removed by means of eau-de-labarraque, and pieces of the colony have then been ground down on a fine and level Whetstone as far as seemed necessary in each single case. For general systematic work it is usually sufficient to grind down a branch to about its median longi tudinal plane; in a St'ylaster, for example, the majority of the gasterostyles will in most cases appear quite free in the middle of the gasteropore. On the finely polished ground surface it will also be possible to study the course of the fine canals. Where there is question of examining the finer structure of the calcareous skeleton, however, this procedure is not sufficient and it is necessary in addition to have thin sections of the same kind as the geologists use in their studies.We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint). To get started finding The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint), you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

Special Offer | $0.00

Special Offer! | $0.00

The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint)

The Danish Ingolf-Expedition, Vol. 5 of 5: Contents, Hjalmar Broch, Stylasteridae, Published at the Cost of the Government (Classic Reprint)

More Books

The Danish Ingolf-Expedition, Vol. 3 (Classic Reprint)

The Danish Ingolf-Expedition, Vol. 3 (Classic Reprint)

The Danish Ingolf-Expedition, Vol. 2 (Classic Reprint)

The Danish Ingolf-Expedition, Vol. 2 (Classic Reprint)

The Danish Ingolf-expedition. Volume v.5 pt.1-4 1946 [Leather Bound]

The Danish Ingolf-expedition. Volume v.5 pt.1-4 1946 [Leather Bound]

The Danish Ingolf-Expedition Volume 51 1899 [Leather Bound]

The Danish Ingolf-Expedition Volume 51 1899 [Leather Bound]

The Danish Ingolf-Expedition Volume 2 p.3 1900 [Leather Bound]

The Danish Ingolf-Expedition Volume 2 p.3 1900 [Leather Bound]

The Danish Ingolf-Expedition Volume 5 p.4

The Danish Ingolf-Expedition Volume 5 p.4

The Danish Ingolf-expedition. Volume v.1 no.1-3 1946 [Leather Bound]

The Danish Ingolf-expedition. Volume v.1 no.1-3 1946 [Leather Bound]

The Danish Ingolf-Expedition, Vol. 2: The North-European and Greenland Lycodinæ (Classic Reprint)

The Danish Ingolf-Expedition, Vol. 2: The North-European and Greenland Lycodinæ (Classic Reprint)

The Danish Ingolf-expedition Volume 2B pt 6-7

The Danish Ingolf-expedition Volume 2B pt 6-7