BISTORT of the SOCIElT. 



17 



months after this, the ground muft be kept conftantly wet, and 

 fprinkled befides with water, having cow-dung mixed with it, 

 every morning, to prevent the fhoots from being blown off by the 

 wind. During the remaining months, the cow-dung may be 

 omitted, and the ground only watered twice a-day, morning 

 and evening. Grafs muft not be allowed to grow. If ma- 

 naged as above, the plants will be perfect in fix months, when 

 they muft be dug up with a long iron bar, to prevent the roots 

 being broken, and bound up in fmall bundles, that are to be 

 dried and bound into larger bundles, of two maunds, or 150 

 pound weight. 



After cutting or beating off the upper part, the roots muft 

 be well powdered, and mixed with four times their quantity of 

 water in a pot, and boiled for fome time, to prepare them for 

 painting and dying red. For the painted calengary or chintz, 

 the painters ufe other fluffs, together with Che root, according 

 to their convenience, as Brazil wood, to fhow them where the 

 red is to be put ; but the Che root is the principal. 



The ground that is once planted with Che root cannot be 

 ufed again for the fame purpofe for fix years. 



At this meeting, there was alfo read the firft part of a paper, , I79tk 



entitled, Experiments and Obfervations on the Unequal Re- Dr Biair on the 



frangibility of Light, by Dr Robert Blair, Regius Profeffor of gSSKyofuS* 

 Aftronomy in the Univerfity of Edinburgh. 



Lit, CI. Mr Fraser Tytler read the fecond part of his 

 Effay on the Principles of Trahilation. This effay has been 

 fince published feparately. 



Jan. 17. 



Mr Frafer Tyt- 

 lev on tranfli- 

 tion. 



A general Meeting of the Society was held for the Election j an . 24. 

 of Members. [See Appendix to the Hiftory of the Society.] £™ eral Meet 



Vol. III. 



(C) 



Phyf. 



