50 PHILOSOPHICAL TRANSACTIONS. [aNNO 1713. 



composed of fine long brittle filaments; the outsides and hollows are filled with 

 very white short and brittle spar. 



12. Matrix Minerae Argenteae, Sahlbergae. — This is a short irregular white 

 shining spar, much like the last, which lies with the amiantus ; it easily breaks 

 into small pieces with the hammer. 



13. Minera Lunae et Saturni e Sahlberg. — The sparks of this are very bright 

 and shining, with smaller micae than N° 10; in it are interspersed some little 

 bits of white spar. 



14. Minera Lunae et Saturni Sahlbergae unA cum Matrice. — This ore has a 

 particular face, being composed of many ruinous angular columns lying con- 

 fusedly ; some long and crooked, others short; among them are some like glass, 

 greenish and transparent ; these very easily fall to pieces with a light blow of a 

 hammer. 



15. Minera Lunae, Arsenici et Saturni ex Argenti fodina Sahlberg. — ^The 

 flakes of these are pretty large, like N° 10, and very glittering. 



16. Cuprum praecipitatum, fodinae Schilou Sueciae. — Its outer coat is rusty, 

 and resembles an iron stone or clay, under which are some thin strata of a dark 

 or bluish hue; the centre of an iron brown, full of small copper micae, which 

 in some places are of a refulgent fiery lustre. 



17. Minera Cupri rarissima e Schilou. — This resembles colcothar, but is of a 

 brighter red, and very weighty; it seems to have some very small shining parti- 

 cles in it, and in some parts of its outsides it has 9 sort of sullen greenish 

 wood-like rust ; but it is not very heavy. 



Some Observations on the Mechanic Arts and Physic of the Indiaiu. By Father 



Papin. N° 337, art. 22, p. 225. 



This country (the East Indies) furnishes more materials for mechanic arts 

 and sciences, than any that I know of. The artizans here have great skill and 

 dexterity : they excel particularly in making linen cloth ; which is of such fine- 

 ness, that very long and broad pieces of it may easily be drawn through a small 

 ring. 



If you tear a piece of muslin into two pieces, and give it to one of their fine 

 drawers to set it together again; it will be impossible for you to discover where 

 it is joined, though you mark it on purpose to know it. They will place to- 

 gether so artificially the pieces of glass or China ware, that one cannot perceive 

 it ever was broken. Their embroiderers work in filigree very curiously : they 

 imitate exactly any work made in Europe, though the implement they make 

 use of, and all their other utensils, do not cost them more than a crown. The 

 looms used by their weavers cost no more : with these they sit in their courts 



