The Scientific American cyclopedia of formulas : partly based upon the twenty-eighth edition of Scientific American cyclopedia of receipts, notes and queries 15,000 formulas / edited by Albert A. Hopkins.
- Albert A. Hopkins
- Date:
- 1910
Licence: Public Domain Mark
Credit: The Scientific American cyclopedia of formulas : partly based upon the twenty-eighth edition of Scientific American cyclopedia of receipts, notes and queries 15,000 formulas / edited by Albert A. Hopkins. Source: Wellcome Collection.
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![however, this plan would be too laborious to pursue with profit, and the crop would better be mown for hay or plowed under. No oats should be sown coming from farms where the wild oat is known to grow. Weeds in Walks, Lawns, Etc. Grass betiveen Bricks in a Wall.— After cleaning out the seams to a depth of a quarter of an inch, scatter a little powdered commercial bluestone and then lightly sweep it over, so as to leave a little powder in the cracks. When this is washed in by the rain, it will prevent vegetable growth and not appreciably stain the brick. A pound of bluestone, costing not over ten cents, will suffice for fifty or more yards of paving, and last for years. Batons.—The plants should be cut off close to the ground and a few drops of coal oil poured on to the crowns. They immediately commence to decay and are utterly destroyed. Troublesome weeds on the lawn can thus be speedily disposed of, but others will likely take their place. Walks.—1.—The best way, says a cor¬ respondent, to apply salt to paths to de¬ stroy weeds, is as follows : Boil the salt in water, one pound to one gallon, and apply the mixture boiling hot with a watering pot that has a spreading rose; this will keep weeds and worms away for two or three years. Put one pound to the square yard the first year; after¬ ward a weaker solution may be applied when required. 2. —Arsenic trioxide, 6 lb. ; copper sul¬ phate, 2 lb.; sodium hydroxide, 2 lb.; po¬ tassium nitrate, 1 lb.; sulphur, 1 lb.; am¬ monium chloride, 1 lb. Use 5 to 10 pounds to 30 gallons of water. 3. —Gas Liquor.—Pour out a few times in succession and do not touch the tree roots and borders of the paths. This medium is cheap. 4. —Rock Salt.—Throw out repeatedly. 5. —Hydrochloric Acid.—The use of hy¬ drochloric and sulphuric acids is some¬ what expensive. Mix 60 liters of water with 10 kilos of unslaked lime and 1 kilo of sulphuric acid in a kettle, and sprinkle the hot or cold mixture on the walks by means of a watering-pot. 6. —Lime Milk.—1 kilo of unslaked lime in 10 liters of water. If used alone it must be fresh. 7. —Among the varieties of gravel, lead gravel is best adapted for garden walks, since it hinders the growth of weeds greatly. 8. —To kill blue grass growing between cricks around the lawn, wash the bricks with salt water or strong solution of soda. L59]](https://iiif.wellcomecollection.org/image/b31361523_0073.jp2/full/800%2C/0/default.jpg)
