Pamphlets on Forestry, Volume 31913 |
From inside the book
Results 1-5 of 13
Page 13
... infection at several places in and about Petersham , partic- ularly along the Athol Road . At that time he marked infected trees in several localities and carefully examined others near them , noting whether they were probably infected ...
... infection at several places in and about Petersham , partic- ularly along the Athol Road . At that time he marked infected trees in several localities and carefully examined others near them , noting whether they were probably infected ...
Page 14
... infection about known centres , and relations of crown and distance between infected specimens ( numbered and oriented sketches ) . 6. Location of trees relative to site , aspect , forest type , and density of surrounding stand or ...
... infection about known centres , and relations of crown and distance between infected specimens ( numbered and oriented sketches ) . 6. Location of trees relative to site , aspect , forest type , and density of surrounding stand or ...
Page 15
... infection were in close proximity that origin could have no effect on their susceptibility in any case . Proximity to roads and highways has no apparent effect on the distribution of the disease . It occurs right next to the roads on ...
... infection were in close proximity that origin could have no effect on their susceptibility in any case . Proximity to roads and highways has no apparent effect on the distribution of the disease . It occurs right next to the roads on ...
Page 16
... INFECTION BY DIAMETER CLASSES Diameter Class Surely Infected Probably Infected Inches Number Per cent Number Per ... infection and more recent infection from those centres could be established , although it was very evident that some ...
... INFECTION BY DIAMETER CLASSES Diameter Class Surely Infected Probably Infected Inches Number Per cent Number Per ... infection and more recent infection from those centres could be established , although it was very evident that some ...
Page 17
... infection are not always easy to determine . Having been deter- mined , the question rises , are the nearer surely infected trees , i . e . , those producing spores , the result of infection by spores which were produced on the original ...
... infection are not always easy to determine . Having been deter- mined , the question rises , are the nearer surely infected trees , i . e . , those producing spores , the result of infection by spores which were produced on the original ...
Common terms and phrases
acre agricultural alfalfa average barley Beech bolts bushels California camp cent climatic cones cost County cover crop dendrology diameter disease drainage drumlin ecological estimated evaporation expenses factors farm favorable field Figure forest forestry fruit girders glacial erosion glacial soils glaciated areas grapes gross income growers growing grown growth water hardpan inches incinerator infection investment irrigation jeffrey pine labor income lakes land lines lodgepole pine loquat maple material methods morainic obtained orchard Oregon pine owner paces peneplain Petersham pieces plant possible pounds practical preglacial production profitable pruning rainfall ranch red fir redwood result rock Sacramento San Joaquin San Joaquin Valley screen season seed shows silvics skids slopes soil mass species Spessart stand surface tent texture timber tion toilet topography tract trees usually valleys varieties vegetation watershed white fir wilting coefficient woods yield
Popular passages
Page 5 - Rosenthal, who has received helpful suggestions from the following authorities : Colonel RG Ebert, Department Surgeon, Western Department, United States Army. WA Sawyer, MD, Director of the Hygienic Laboratory of the California State Board of Health. William B. Herms, Assistant Professor of Parasitology, University of California, and Officer in charge of Malaria Investigations, California State Board of Health. Dr. George W. Shaw, Consulting Agriculturist and Land Expert. Symmes, Means & Chandler,...
Page 11 - Every bunk house, tent, or other sleeping place used for the purpose of a lodging or sleeping apartment in such camp shall contain sufficient air space to insure an adequate supply of fresh air for each person occupying such bunk house, tent, or other sleeping place.
Page 26 - ... dig a pit. In short camps not likely to be used again all kitchen waste may be thrown into the pit. but in camps of longer duration it is necessary to strain all dish water, etc., through a box sieve suitably placed over the pit and then to burn all solid matter in the range or incinerator.
Page 8 - Figure 5 (page 11) shows how a well located on high ground may be polluted by the contents of a cesspool lower down. Figure 6 (page 11) shows how a cesspool located on high ground may fail to pollute a well lower down.
Page 23 - A rock pile Incinerator which can be installed very cheaply if rock is available on the ground. This incinerator is suitable for a camp of about two thousand five hundred persons. the wall so as to provide a sloping approach, thereby preventing surface water from gaining access to the pit. Build a pyramid of large stones 4 or 5 feet high in the center to provide a central draft. The heat of the bottom stones evaporates the liquid slops while the solids are soon consumed as fuel for the fire. Precautions...
Page 9 - ... how a cesspool located on high ground may fail to pollute a well lower down. 7. Frequent analyses of the water in use should be made to assure the water's purity. 8. If drinking water is kept in a barrel, the barrel should be cleaned frequently. The water should be drawn from this barrel by a faucet, and a tight cover kept on the barrel to prevent men from dipping in with a cup and also to prevent insects from entering. 9. The use of individual drinking cups should be encouraged among the employees....
Page 18 - Region. 2. Central Coast Region. 4. Interior Valley Region. 5. Mountain and Plateau Region. The Northwest Coast Reg-ion. — This section is mountainous, being covered principally by the Coast Range. The valleys are relatively -small and irregular. The important climatic features of this section are the moderate temperatures throughout the year, the high annual rainfall, and the prevalence of high winds and fogs along the coast. At Eureka in Humboldt County the highest temperature recorded is 85.2...