Page:Willich, A. F. M. - The Domestic Encyclopædia (Vol. 2, 1802).djvu/409

fn Yorkshire, instead of ' .,', are covi red on both sid< s w itfa •' • i red coral tint, smooth, b< lutiful, and incom- ,. irabl »le than all our earthen vessels; having withstood the effects of time for a of centuries. On die contrary, the glazing bf all mir earthen ware is very apt to k, both from moisture ami beat, being composed of one of tin mosi pern] sous n that could be i such im- portant purpoc . It is v ciJ known that lead i- . heat, and readily decomposed by any vegetable acid: hence it has been affirmed by various eminent wri- are under the d • sity of inhaling or swallowing, per- haps even- day, a minute portion ■ of a metal which is one of t: e slowest, but most destructive poi- sons, and lavs the foundation of many fatal disorders, such as palsy, dry colic, consumption, &c. the re- mote cause of which has not, till lately, been suspected. Although we are no advocates for spreading- alarm. or exciting ap- prehension, yet there appears to be sufficient reason to bt licve that our | la u d culinary vessels are a latent Source of disease ; and when fruit or acids be allowed to remain in them for some time, the liquors or substances thus preserved will ne- cessarily acquire a very dangerous impregnation fn m the metal. Instead, therefore, of describing the composition and process by which earthen vessels are usually glazed, we shall earnestly recom- mend various substitutes for lead to the attention of the public. M.A estrumb', an eminent Ger- man chemist, was required by the government of Hanover to'devise WE. 1 377 - pernicion : i kglazirig earthen ware than teas bith I i d, In < • ol no- i, r|>i rimettts, i> i has at length published the successful n> m:Ii of Bpv< ral composition s, in which not a particle of had was employed, and which in bis opinion will prove an useful glflZ*Bg lor or- dinary v< isels. First : l<2 parts of sand : 1 1, 15, or 80 parts of purified pot-ash j and from 3 to 5 parts ol borax. Second : 9 ! parts ol glas9 (we snpp rlassji 16 parts ind 3 parts of pi. re pot- ash. Third ; 150 parts of crystalliz- ed GlauherVsah, with 8 parts of pulverized charcoal, previously roasted, till it has acquired a grey colour; 10' parts of sand ; and iJ parts of borax. Another method of withe out lead has been invented by M. NlESEMAN, a pottl r at Leipzig : it consists of half a pound of sak- pe'l e, half a pound of pot-ash, and pound of common salt. This composition is not very expensive, and said to produce an enamel not inferior to that prepared with lead. Professor Leoxkakdi has investi- gated, and found it eminently use- ful. We trust, therefore, our pot- ters will in -future conscientiously desist from using that pernicious and slowly poisonous metal. GLEAN 1 N G, or Leas* n a . as it i-. called in some counties-, is the gathering or picking up those ears of corn which are- left alter tl e held has been reaped, and die crop car- ried home. This practice has lately been de- cided to be illegal ; and so far as it respects th >se idle persons, whoso sole occupation during the summer months, is to procure a scanty sub- sistence