Category: Science - Biology
In considering the subject of Timber trees, we commence with their Elementary Tissues, and first in order is the _Formative Fluid_, which is the sole cause of production of every tissue found in trees. It is semi-fluid, and semi-transparent, and in this condition is found abun...
Long years of practical experience has shown that timber, however prone to dry or wet rot, may be preserved from both by the use of certain metallic solutions, or other suitable...
11. CHAPTER IV.All timber must, whether it be sap-wood or heart-wood, be placed in situations which will allow the sap to exude or evaporate, and this process is the one technically known by t...
9. CHAPTER II.The opinion generally received has drawn a line of discrimination between the decay accompanied by a vegetable spreading on the surface of the timber, and that which is effected...
14. CHAPTER VII.As the destruction of timber by fungi has been called the _vegetable_ rot, it may not be inappropriate to term the destruction of wood by various worms and insects, the _animal_...
13. CHAPTER VI.Although writers on dry rot have generally deemed it a new disease, there is foundation to believe that it pervaded the British Navy in the reign of Charles II. “Dry rot receive...
18. CHAPTER XI.The decay of wooden sleepers, posts, &c., on our railways and the destruction of timber piles by worms have been the causes of directing the attention of engineers to the preser...
15. CHAPTER VIII.The carpenter bee prefers particular kinds of wood. In India it is very fond of cadukai (_Tamil_) wood, which is often used for railway sleepers. Round the holes it makes there...
16. CHAPTER IX.Although trunks and boxes are of themselves of little importance, they derive great consequence from the valuable deposits of written papers, deeds, books, &c., which they frequ...
19. Part 1. Geometry on Paper--Part 2. Solidity, Weight, and_A Practical Treatise on Casting and Founding_, including descriptions of the modern machinery employed in the art. By N. E. SPRETSON, Engineer. With 82 _plates_ drawn to scale,...
8. CHAPTER I.In considering the subject of Timber trees, we commence with their Elementary Tissues, and first in order is the _Formative Fluid_, which is the sole cause of production of ever...
10. CHAPTER III.The end to be attained in the management of timber trees is to produce from a given number the largest possible amount of sound and durable woods. When a tree, under conditions...
17. CHAPTER X.The following summary of the most approved formula for preventing and curing the evils of rot is prepared from the works of Tredgold and Wylson; some other more modern receipts...
20. Part 1. Introduction and the Principles of Geometry. Part 2. LandSurveying; comprising General Observations--The Chain--Offsets Surveying by the Chain only--Surveying Hilly Ground--To Survey an Estate or Parish by the Chain only--Surveying wi...
7. CHAPTER XI.5. CHAPTER VIII.2. CHAPTER IV.6. CHAPTER IX.4. CHAPTER VII.3. CHAPTER VI.1. CHAPTER II.