STANDARD RECEIPTS. 51I 



I/Cngth of Nails. This table is \-ery convenient in estimating the 

 amount of nails required to do a certain piece of work, and the size 

 required. 



A 3-penny nail is i inch long and there are 550 in a pound. 



A 4-penny nail is i ^ inches long and there are 350 in a pound. 



A 5-penny nail is i ^ inches long and there are 230 in a pound. 



A 6-penny nail is 2 inches long and there are 165 in a pound. 



A 7-penny nail is 2 j{ inches long and there are 140 in a pound. 



An 8-penny nail is 2 J^ inches long and there are 1 10 in a pound. 



A lo-penny nail is 2^ inches long and there are 96 in a pound. 



A i2-penny nail is 3 inches long and there are 55 in a pound. 



A 20-penny nail is 3^ inches long and there are 35 in a pound. 



There are i6 spikes in a pound, 4 inches long. 



There are 12 spikes in a pound, 4^ inches long. 



There are 10 spikes in a pound, 5 inches long. 



There are 7 spikes in a pound, 6 inches long. 



If a board fence is four boards high and there are six nails in each 

 board, it will take take twenty-four nails for each panel. If lo-penny 

 nails are used a pound of nails will build four panels of fence, &c. , &c. 



To Clean Rusty Plows. Take a quart of water and pour slow- 

 ly into it half a pint of sulphuric acid. (The mixture will become quite 

 warm from chemical action, and this is the reason why the acid should 

 be poured slowly into the water, rather than the water into the acid). 

 Wash the mould-board (or any other iron that is rusty) with this weak 

 acid, and let it remain on the iron until it dries. Then wash once more. 

 Give time for the acid to dissolve the rust. Then wash with water, and 

 where the worst rusty spots are, apply some more acid, and rub those 

 spots with a brick. The acid and the scouring will remove most of the 

 rust. Then wash the mould-board thoroughly with water to remove the 

 acid, and rub it dry. Brush it over with petroleum or other oil, or lard 

 and resin as just recommended, if it is not to be immediately used. 

 When you go to plowing, take a bottle of the acid water to the field and 

 apply it frequently to any spot of rust that may remain. The acid and 

 the scouring of the earth will soon make it bright and clean. 



How to I<OOSen Nuts. When nuts and screws have become fast 

 from rust, pour on them a little kerosene, and wait a few minutes un 

 til it becomes soaked with the liquid. When this is done they can be 

 easily started and the bolt saved. 



