-nomiaron >pho8phate<o{ soda^^ iphesphflteibf liJnae^iia^diaj Kitle iWiphbs- 

 phate of soda exist together in solution ; and by varying the quan- 

 r^^titiesof eaeh of these substancesjitiie various* pbaenoinedai wbiiih the 

 iiurineoocasionalljr presents may ibfe- iAitatfed^ ■ Thetimidiattthidi the 

 'alkalliesoend^ of Ithe. urine froai:fixed!alkali^euiBrilly occuTriyiddicaies 

 .ikf^, «Ki^tende of^mi& alkaline«pkas{>}iiate^oii lof ^me vaLtb(ynbAe^nislBAli 

 dtaitfae^Dodb 'io fcsJjjJg omoo iii iBili bavTjgJo §nr/i;ii ,7oiiJu/i oiiT 

 -ni *i^)B,9ikmi(^ett^M(ii)lmii{JtewaJko ^t^hmsiau SilBeckiuEsq. 



-lolubenobgdeti^dh^ ecrotbck) itefj^iis/;(»]hiiauBdoatEoi£isatifeiieiidrdothe 

 'jiteofatstlfdbidbda^ckiimBb M tbeiaecMes ii€4he^ utems, biAhih ^emilim- 

 iybpghariifcd e2Hli^giBvjdifitktiia^j>Kitib a<«ite?c{9 todeti9iiinii3i^i£ab|yr/(d)ang8s 

 ')ar«idDBaifFafaIt ioithBHAihiitlieaittvnifd^njditEandil:) }£e,<@i^D8in)iaaibaty 

 ^totbeeiibatonMeai details .tif itheflarolatioiT ctf tihegb'eabijjld.hchiiic 

 Jnersrajlthflj composition of i the semilunar ganglion, and the diatriba- 

 tion ofj.liiie} JMranahi^s'.'pasabciQdikrg ofradixi^to iti^odiifqraiil abdomiml 

 viscer^uJ Hjiisdtdticl^ialansi |iarei^'Ehatr"irhiHeiI(li1ier>idtvaarsa sAei\^iB)iih)iir 

 \iierves from the venal, the fallopian tubes from the 'hypogastrid^^iifald 

 fthe bladder, rectum and va^i^iua from the pelvic plexu8,ithe oetTi^s 

 supplying the uterus are continuations oi the hypogastric jpleacte, 

 and that they undergo, during pregnancy, no further changej 'eit^r 

 Jin size or position, except that which is the sini})le consequence^^ 

 *tlie enlargement of the organ over which they arc distributed, and 

 sthat they undergo no other change during a second pregnancy. He 

 ithinks it probable, moreover, that tlie vessels of tiie uterus do not 

 iiecrease in size after parturition, but are only contracted in their 

 cavity. He notices several points relating to these subjects, which 

 are still open to farther investigation. Tiie paper is aecom]>anied 

 rby highly finished drawings of the appearance of the dissected parts. 

 "On a Peculiar Source of Deterioration of the Magnetic Powers 

 of Steel Bars." By William Sturgeon^uEsq. JzGommunicated by 

 S. Hunter Christie, Esq., Sec. R.S. o 91I ifofriv/ Una Ju^oeolsAln 

 The author concludes, from various experiments on the ehainges 

 in the magnetic force of steel magnets produced by subjecting them 

 to blows with a wooden mallet, or other modes of creating tremors 

 or vibrations among their particles, that the most apparently trifling 

 mechanical agitation is sutBcient to occasion a considerable diminu- 

 tion of magnetic power ; that this loss, when it has taken place from 

 such a cause, is permanent ; and that in every case, after reaching a 

 certain point, it attains its maximum, a fact which implies, in every 

 magnet, the possession of a specific retentive force, of vThich it can- 

 not be deprived by any further mechanical commotion of its parti- 

 cles. The more highly a bar is magnetized, the more it becomes 

 susceptible of a loss of power by agitation. 



" An Account of a Protracting Pocket Sextant." By Colonel 

 Bainbridge. Comnmnicated by P. M. Roget, M.D., Sec. R.S. 

 J The object of the invention here described is to facilitate and ex- 

 pedite the making of sketches and surveys for militaiy purposes on 

 actual service, and by serving at once as a sextant and protractorj so 

 that as soon as an angle is tak^n; it may at once be i^id down on 



