

LAPLACE'S FORMUL.E 



659 



Laplace's Formulae. I. For preparing acid sublimate 

 ion, I to iooo: Take of bichlorid of mercury. I 

 gram ; nitric acid, 5 grams ; water iooo grams. 2. For 

 preparing acid sublimate tablets : Take of bichlorid 

 of mercury. 1 gram ; tartaric acid, 5 grams. Make 

 into one tablet. This is to be dissolved in one liter 

 (iooo grams j of water. 3. Acid sublimate gauze is 

 prepared by dipping the gauze in the foregoing solu- 

 tion, wringing it out, and allowing it to dry in a clean 

 atmosphere. 



Lappa la// -ah) [L.: gen. , Lappcr]. Burdock. The root 

 of the common burdock, Arctium lappa, contains a bit- 

 ter principle, a resin, and tannin. It is aperient and diu- 

 retic and has some reputation as an alterative in constitu- 

 tional blood-diseases. A tincture of the seed has been 

 recommended in skin-diseases. The dose of the root 

 is ZJ-ij, in infusion or tincture; of the fluid extract, 



Tt l x_ 3 J • 

 Lappaceous {lap-a' -she-us) [lappa, a bur]. In biology, 



bur-like. 



Lappet {lap'-et) [ME., lappet, lappet]. In biology, the 

 wattle of a bird. 



Lapsana 1 lap' 'san-a/i) [tavavr], an eatable herb]. A 

 genus of composite plants. L. communis, was 

 formerly used as a laxative and in skin-diseases. 



Lapsus (lap' -sits) [labi, to fall]. A fall ; ptosis. L. 

 palpebrae superioris, ptosis of the eyelid. L. pilo- 

 rum, alopecia. L. unguium, falling of the nails. 



Larch [ME., larche, larch]. See Larix and Tamarac. 



Larcher's Sign. See Death. 



Lard and Lard-oil [ME. , larden, lard]. Adeps. The 

 fat of the pig melted by gentle heat and strained. 

 Crude lard is white, granular, and of the consistency 

 of a salve, of faint odor and sweet, fatty taste. 

 Its specific gravity is .938 to .940 at 15 C. Exposed to 



' the air it becomes yellowish and rancid. When com- 



, pressed at 32 F., it yields 62 parts of colorless lard- 



' oil and 38 parts of compact lard. Lard is used in 



'. cooking ; lard-oil for greasing wool, as a lubricant, 

 and an illuminant. 



^ardaceln (lar-da / -se-in) [ME., larden, lard]. An 

 animal proteid, an indigestible amyloid substance, 



' chiefly occurring as a pathologic infiltration into 

 various organs, as the liver, or spleen. 



Lardaceous (lar-da'-she-us) [ME., larden, lard]. See 

 Amyloid. L. Kidney. See Bright's Disease. 



Larinoid [lar'-in-oid) [/aptvoc, fat; el6oc, like]. Lar- 

 daceous ; as larinoid carcinoma. 



Larix la r -riks) [L., gen. Lands']. Larch. The dried 

 bark of Larix europosa, the European larch, similar 

 in action to balsamic and terebinthinate remedies. It 

 is expectorant, stimulant, and astringent. L., Tinct. 

 (B.P.) Dose TT^xx-xxx. See, also, Tamarac. 

 l.arkspur (lark' -spur). The seed of Delphinium con- 



| solida, a diuretic and emmenagogue Dose of the fid. 



ext., mj-x. Unof. 

 -arnaude's Disinfecting-fluid. A solution of zinc 



sulphate containing a little copper sulphate, 

 ^arrey's Amputation. See Operations, Table of. L.'s 

 Apparatus, a form of immovable dressing made by 

 saturating the bandages in a mixture of camphorated 

 spirit, lead-water, and white of egg. L.'s Bandage. 

 See Bandage. 



•artigue's Pills. Pills used in the treatment of gout, 

 containing compound extract of colchicum 20 parts, 

 and extract of digitalis, one part. 



arva lar'-vah) {larva, a ghost: pi. Zrt/Tvr]. The 

 young stage of such animals as undergo transformation. 

 The form that insects take in emerging from the egg, 

 commonly known as the caterpillar or " grub" stage. 

 I Also, applied to the immature form distinguishing many 

 1 of the lower vertebrates before maturity. L., Loven's, 



LARYNGISMUS 



the young of the marine worm polygordius. L., 

 Miiller's, the free-swimming young of the polyclad 

 platodes, Thysanozoon and Yungia. 



Larvaceous (lar-sa'-she-us), Larval (lar^-val) [larva, 

 a mask]. Covering the face like a mask. 



Larval [larva, a ghost]. I. Pertaining to or existing 

 in the condition of a larva. 2. Same as Larvace- 

 ous. L. Paludism. See Dumb Ague. L. Pneu- 

 monia. See Pneumonia. L. Scarlatina, a mild 

 case of scarlet fever in which the rash is absent. 



Larvate \ la;' -vat) [larvatus, masked]. Concealed; 

 masked ; applied to diseases and conditions that are 

 hidden by more obvious conditions, or by some pecu- 

 liarity of their symptoms. 



Larviform {lar'-vif-ortn) [larva, a larva; forma, 

 shape]. Resembling or being a larva. 



Larvigerous (lar-rij'-er-us) [larva, ghost, mask ; gerere, 

 to carry]. In biology, bearing the larval skin. 



Larviparous {lar-viP'-ar-us) [larva, larva; parere, to 

 bring forth]. In biology, bringing forth young that 

 have reached the larval state. 



Larvivorous (lar-viv'-or-us) [larva, larva; vora re, to 

 devour]. In biology, feeding on larvae. 



Laryngalgia (lar-in-gal' '-je-ah) [Mpvyg, larynx ; as.yoq, 

 pain]. Pain or neuralgia of the larynx. 



Laryngeal {lar-in' -je-al) [/.apv}$, larynx]. Per- 

 taining to the larynx. L. Artery. See Arteries, 

 1 able of. L. Cough, an hysteric manifestation in 

 young women. It is a paroxysmal cough, with a pe- 

 culiar hoarse and muffled sound, like the barking of a 

 dog. L. Crisis, an acute laryngeal spasm, occurring 

 in the course of tabes dorsalis. L. Dilator, an in- 

 strument designed to dilate the larynx, when the latter 

 has become constricted by cicatricial tissues, or from 

 other causes. L. Edema, infiltration of a fluid or 

 semi-fluid into the submucous connective tissue of the 

 larynx. It is usually associated with some disease or 

 injury of the larynx, and occurs mainly between the 

 eighteenth and thirty-fifth years. It is characterized 

 by dyspnea and dysphagia. L. Epilepsy, a peculiar 

 neurosis of the larynx characterized by a sense of 

 suffocation during sleep. There is no discoverable 

 lesion. L. Mirror, a small circular, silvered-glass 

 mirror used in laryngoscopy. L. Nerve. See 

 Nerves, Table of. L. Paralysis, a loss of power 

 of some or of all of the muscles of the larynx. L. 

 Pouch. See Pencil. L. Reflex. See Reflexes, 

 Table of. L. Spaces, the upper, middle, and lower 

 parts into which the larynx may be conveniently di- 

 vided. L. Vertigo. See 7 '"< rtigo and L. Epilepsy. 



Laryngectomy {lar-in- jek'-to-ine) [/apr;.f, larynx; 

 EKmuij, a cutting out]. An operation for the extir- 

 pation of the larynx. 



Laryngemphraxis {lar-in-jem-fraks' '-is) [/dpv- ; £ , 

 larynx ; euppa^tq, stoppage]. Closure or obstruction 

 of the larynx. 



Laryngismal {lar-in-jiz'-mal) [?.apv)-yi^£iv, to vocifer- 

 ate]. Relating to laryngismus. 



Laryngismus {lar-in- jiz'-m us) Sjapxrp/L^eiv, to vocifer- 

 ate]. A term loosely applied to various spasmodic 

 affections of the larynx, such as epileptic spasm. See 

 Laryngeal Epilepsy. L. paralyticus, a paralysis of 

 the recurrent laryngeal nerve in horses, producing 

 the affection called "roaring." L. stridulus, 

 laryngospasm ; spasmodic croup ; spasm of the 

 glottis. A spasmodic affection of the larynx, mainly 

 confined to the early period of childhood. There 

 is a sudden arrest of respiration, with increasing 

 cyanosis, followed by long, loud crowing inspirations. 

 This affection occurs in rachitic children and especially 

 in such as are of the neurotic tendency. The attack 

 may be severe enough to terminate life. 



