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Miles per hour. 1. Very light breeze...

2 2. Gentle breeze..

4 3. Fresh breeze...,

12 4. Strong wind..

25 5. High wind.

35 6. Gale..

45 7. Strong gale.

60 8. Violent gale..

175 9. Hurricane..

90 10. Most violent hurricane

100 BAROMETER. Barometer reduced to Freezing Point.-In this space are placed the figures which indicate the observations on the barometer reduced to the temp. of 32° Fahrenheit, by means of a table; and also the mean or average of the three reduced daily observations.

FORCE OF PRESSURE OF VAPOR. In this space are entered the numbers which indicate the inches of mercury of a barometer which the force of vapor of the atmosphere alone will sustain. The whole pressure of the atmosphere, as given under the head of "Barometer,” is due, conjointly, to the weight of the air and the moisture which it contains. The figures under this table indicate the separate pressure of the moisture, and are obtained from the records of the wet and dry bulb thermometers by means of a table based on experiment.

RELATIVE HUMIDITY OR PERCENTAGE OF SATURATION. The quantity of water in a state of vapor which a given space can contain, depends on the temperature. When a given space has as much water as it can hold at a given temperature, it is said to be saturated with vapor. If the temperature be lowered, a portion of the vapor will be condensed into water, but the space will still be saturated. If the temperature be raised and no more vapor be admitted, the space will only be partially saturated. The numbers under the head of “Relative humidity" therefore denote the percentage of saturation ; full saturation being indicated by 100, and half saturation by 50. These figures are deduced from the corresponding forces of vapor by means of a table in the Smithsonian Collection.

RESULTS FOR 1878. Mean daily temperature...

44°.54 Amount of rain and melted snow in inches..

31.745 Depth of snow in inches..

653 Barometer reduced to 32° Fab..

28.874 Pressure of vapor in inches.

.285 Percentage of Humidity..

82.

CONTENTS.

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THE FRUIT REGIONS OF MICHIGAN (Continued):

Nationalities of the Population,
Fruit Area Extending,
What was Done on a Small Orchari'
Grand Haven Harbor,
Grand River and its Scenery,
Spring Lake Scenery,
Fruit Farms in the vicinity,
Marl vs. the Borer,
Extent and Results of Fruit Growing,
Marsh Lands,
The Sand Hills,
Pigeon Creek Exposure to the Lake,
The Peach Plains Settlement,
Productiveness of Old Apple Trees,
A Premium Orchard,
Crop of 1874,
A Pioneer Orchard,
Fruit Drying,
Muskegon Harbor and City,
Black Lake, or Lake Harbor,
The Lake Harbor Fruit Growers,
Codling Moth Conquered,
Muskegon Lake Orchards,
Unimproved Lands,
White Lake and its Surroundings,
Fruit Lands,
A Wine Company,
What one Man has Done,
Price of Land,
Increasing Interest in Fruit Culture,
Oceana County as Affected by Lake Winds,
Oceana County, Shape of the Land,
Pentwater Lake,
Beginnings in Fruit Culture,
Available Land,
Indian Reservation,
Pere Marquette Lake and Surroundings,
Atmospberic Influences and Scenery,
The Fruit Lands,
No Pear Blight-How Avoided,
Plum Growing,
A Large Crop of Strawberrries,
Fruit Growers about Pere Marquette Lake,
Manistee Harbor and vicinity,
Manistee Lake and City,
Manistee City Gardens,
Orchard and Garden of Hon. J. i. Taylor,
Ten-acre Orchards,
The Larger Farms in tlie vicinity of Manistee,
Irrigation Company,
General View of the Manistee Region,
Country North of Manistee,
The New Mission Settlement,
Northport Harbor and vicinity,
Some Indian Farming,
Leelanaw County, generai advantages,
Indian Reservation
Traverse City and its Business,
A Public Park,
Scenery around Traverse City,
The Hannah Orchard,
The Borer in Plum Trees,
A New Trap for the Codling Moth,
Judge Ramsdell's Fruit Farm,

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