FEC 



58.494 grains of carbonate of lime, and 

 185.266 grains of silica; consequently, 

 the fixed parts thrown out of the system, 

 during 1 these ten days, amounted to 



274.305 grains phosphate of 



lime 



511.911 carbonate of lime 

 185.266 silica. 



Given out 971.482 

 Taken in 356.057 



Surplus 615.425 



consequently, the quantity of fixed mat- 

 ter given out of the system, in ten days, 

 exceeded the quantity taken in by 615. 

 425 grains. 



The silica taken in 

 amounted to 



T onlf V6n 



? - n ^. 



$ 219.548 grams 



185 ' 266 



Remains 34.282 



consequently, there disappeared 34.282 

 grains of silica. 



The phosphate of? .,<,,. - nr . 



limetakeninwas$ 136.509 grams 

 That given out was 274.305 grains 



137.796 



consequently, there must have been 

 formed by digestion in the fowl, no less 

 than 137.796 grains of phosphate of lime, 

 besides 511.911 grains of carbonate ; con- 

 sequently, lime (and perhaps also phos- 

 phorus) is not a simple substance, but a 

 compound, formed of ingredients which 

 exist in oat-seed, water and air, the only 

 substances to which the fowl had access ; 

 silica may enter into its composition, as 

 part of the silica had disappeared ; but if 

 so, it must be combined with a great quan- 

 tity of some other substance. (Ann. de 

 Chim. xxix. 61.) 



" These consequences," as Dr. Thomp- 

 son observes, whom we follow in this ar- 

 ticle, " are too important to be admitted 

 without a very rigorous examination. The 

 experiments must be repeated frequent- 

 ly, and we must be absolutely certain that 

 the hen has no access to any calcareous 

 earth, and that she is not diminished in 

 weight ; because, in that case, some of 

 the calcareous earth, of which part of the 

 feody is composed, may have been em- 

 ployed. This rigour is the more neces- 



FEE 



sary, as it seems pretty evident, from ex- 

 periments made long ago, that some 

 birds, at least, cannot produce eggs, un- 

 less they have access to calcareous earth. 

 Dr. Fordyce found, that if the canary bird 

 was not supplied with lime at the time of 

 her laying, she frequently died, from her 

 eggs not coming forward properly. (On 

 Digestion.) He divided a number of 

 these birds, at the time of their laying 

 eggs, into two parties : to the one he 

 gave a piece of mortar, which the little 

 animals swallowed greedily ; they laid 

 their eggs as usual, and all of them lived ; 

 whereas many of the other party, which 

 were supplied with no lime, died. 



Vauquelin also ascertained, according 

 to Fourcroy, that pigeon's dung contain- 

 ed an acid of a peculiar nature, which in- 

 creased when the matter is diluted with 

 water ; but gradually gives place to am- 

 monia, which is at last exhaled in abun- 

 dance. (Fourcroy, i. 70.) 



FEE, in law, feudum beneficium, all 

 land in England is in the nature of a feud 

 or fee, and subject to the original condi- 

 tions of the grant, which is supposed to 

 come from the crown ; but now that dis- 

 tinction is very immaterial. 



FEE simple, is an estate to a man and his 

 heirs, and is the largest estate which one 

 can have ; it descends to heirs of all kinds, 

 and may be granted or devised at plea- 

 sure. When it is created by deed, it must 

 be expressly stated to be to the gran- 

 tee and his heirs ; for an estate to A, for 

 ever, is only good for life : in a will, how- 

 ever, this strictness is not required ; any 

 words which shew the intent of the tes- 

 tator will be sufficient. In a deed, a man 

 cannot give a fee-simple to one, and then 

 afterwards, in case he dies without heirs, 

 to another. In a will, words which im- 

 port this are often construed only to give 

 the first taker an estate tail. It may be 

 forfeited for treason or felony. Upon an 

 exchange, a fee may pass without ex- 

 pressing the word heir ; so also on a fine 

 or recovery. A grant to the King, or a 

 corporation, sole for ever, necessarily 

 gives a fee, because they never die. 



FEELERS, in natural history, a name 

 used by some for the horns of insects, 

 but is now used in familiar language in- 

 stead of the word Palpi, 2, 4, or 6 articu- 

 lated processes, placed in the mouth of 

 insects, to assist in applying the food pro- 

 perly to the jaws. See ENTOMOLOGY. 



FEELING, one of the five external 

 senses, by which we obtain the ideas of 

 solid, hard, soft, rough, hot, cold, wet, 



