Premiums in Chemistry, b(c. 



Jivere.l on or before the first Tuesday in Febru- 

 ary, 1S04. 



65. The same premium is extended one year 

 farther. The accounts and cerlifuales to be de- 

 livered on or before the tirst Tuesday iti Febru- 

 ary, 1805. 



66. Raising Water for. the Irrigation 

 d Land. To the person who shall discover to 

 the Society the cheapest and most effectual me- 

 thod of raisin" water in quantities sufficient to be 

 beneficially employed for the purposes of irrigat- 

 ing land, -uperior to and cheaper than any other 

 method now in use; the gold medal, or thirty 

 guineas, A model on a scale of one inch to a 

 foot, with certificates that a machine at large on 

 the same construction has been used, specifying 

 the quantity of water delivered in gallons per 

 hour, and the height to which it was raised, to 

 be produced to the Society on or before tlic first 

 of March, 1803. 



The same premium is extended one year far- 

 ther. Certificates to be produced on or before 

 the first of Ma. ch, 1804. 



67. Culture ok Hemp in certain parts 

 ©V Scotland. The Society for tin? Encourage- 

 ment of Arts, Man 1 1 fact u res, and Commerce wish- 

 ing to encourage the growth of hemp for the use 

 of the navy, in certain parts of Scotland, com- 

 prehending the whole county of AffJyJe, that 

 part of Perthshire situated to the north of the 

 river Tay, and wet of the Military Road (see 

 Ainslie's Ma]) of Scotland) leading from Logic- 

 rait to the County of Inverness, and such other 

 parts of Scotland as lie north or' InvCinc-s-shire, 

 offers to the person who shall sow with hemp, in 

 drills at least eighteen inches asunder, the great- 

 est quantity of land in the above mentioned dis- 

 trict, not less than fifty acres statute measure, in 

 the year 1802, and shall at the proper season 

 Cause to be plucked the summer hemp (or male 

 hemp bearing no seed) and continue the winter 

 hemp (or female hemp bearing seed) on the 

 ground until the seed is ripe; the gold medal, or 

 fifty guineas. 



67*. To the person who shall sow with hemp, (in 

 drills at leu^t eighteen inches asunder) the next 

 greatest quantity of land in the same above-men- 

 tioned district, not less than twenty-five acres 

 statute measure, in the year 1802, and shall at 

 the proper season cause the same to be plucked 

 as above-mentioned ; the silver medal, or twenty - 

 five guineas. Certificates of the number of acresj 

 of the distance of the drills, of the plucking of 

 the hemp, with a general account of the soil, 

 cultivation, and produce, to be delivered to the 

 Society, along with fourteen pounds of the 

 hemp, and two quarts of the >ecd, on or before 

 the second Tuesday in January, 1803. 



PREMIUMS FOR DISCOVERIES AND 

 IMPROVEMENTS IX CHEMISTRY, 

 DYING, AND MINERALOGY. 



6$. Preserving Seeds of Vegetables. 

 For the best method of preserving the seeds of 

 plants in a state fit for vegetation a longer time 

 titan has hitherto bc«o practised, such Ju«thod 



103 



being superior to any krtown (o the public, ano! 

 verified by sufficient trial, to be communicated to 

 the Society on or before the first Tuesday in De- 

 cember, 1802; the gold medal; or thirty guineas* 

 tiy. Preventing the Dry-Rot in Timber. 

 To the person who dial I discover to the Society 

 the cause of the dry-rot in timber, and disclose 

 a certain method of prevention superior to any 

 hitherto known; the gold medal, or thirty gui- 

 nea-.. The accounts of the cause, and method 

 of prevention, confirmed by repeated experi- 

 ments, to be produced to the Society on or be- 

 fore the second Tuesday in December, 1802. 



70. Preserving salted Provisions from 



BECOMING RANCID OR RUSTY; To the person 

 who shall discover to the Society the bc*t, cheap- 

 est, and most efficacious method of preserving 

 salted provisions from growing rancid or rustr ; 

 the gold medal, or thirty guineas. A full de- 

 scription of the method, with proper certificates 

 that it has been found, on repeated trials, to an- 

 swer the purpose intended, to be produced to> 

 the Society on or before the first Tuesday ia 

 February, 1303. 



71. Clearing Feathers from their ani- 

 mal Oil. To the person who shall discover to) 

 the Society the best and most expeditious me- 

 thod, superior to any hitherto practised, of clear- 

 ing goo.<e-feathers from their offensive animal 

 oil, for the use of upholders, in making beds, 

 cushions, Sec. the silver medal, or twenty gui- 

 neas. A quantity of such feathers unstripped 

 and so cleared, not less than forty pounds weight, 

 with a full account of the process, to be produced 

 to the Society on or before the first Tuesday ia 

 February, 1803. 



72* Refining Whale or Seal Oil. For 1 

 disclosing to the Society an effectual method of 

 purifying whale or seal oil from the glutinous 

 matter thatincrusts the wicks of lamps and ex- 

 tinguishes tlrr light, though fully supplied with 

 oil; the gold medal, or fifty guineas. It is re- 

 quired that the w hole of the process be fully and 

 fairly disclosed, in order that satisfactory expe- 

 riments may be made by the Society to deter- 

 mine the validity of the claim; and ccrlijicales 

 that not less than twenty gallons have been pu- 

 rified according to the process delivered in, to- 

 gether with two gallons of the oil, in its unpuri- 

 fied state/and two gallons so refined, l>e produc- 

 ed to the Society on or before the second Tues- 

 day in February, 1803. 



73. Manufacturing Tallow-Candles. 

 To the person w ho shall discover to theSccietv a 

 method of hardening or otherwise preparing tal- 

 low, so that candles may be made of it which 

 will burn as clear and with as small a wick a* 

 wax caudles, without running, and may be afford- 

 ed at a less expense than any at present made 

 with spermaceti ; the gold medal, or thirty gui- 

 neas Certificates that 112 lb. of such tallow- 

 have been made into candles, and 121b. of the 

 candles made thereof, to be produced to the So- 

 ciety on or before the second Tuesday in Ja- 

 nuary, 1803. 



7-K Candles from Resin or other Sub- 

 stancss. To the person who shall discorct to 



