THEORY 



1511 



THERIOMA 



tendency to development and the efforts excited by 



.ge of conditions. T., Landerer's {of Inflamma- 



: that the tension of the tissues ( Gewebspannung) 



ing inflammation is much lower than under normal 



iitions. The capillaries surrounded by these 



imed tissues are unable to withstand the pressure 



he blood and, therefore, dilate. The immediate 



• of this dilatation is an acceleration of the move- 



it of the blood, which rushes in to fill the widened 



illaries. But after a certain lapse of time, as the 



unding tissues lose their elasticity more and more, 



lood-stream slows, thus producing the condition 



of the circulation typical of inflammation, i Metschni- 



T., Metschnikoff s Biologic or Comparative 



" inflammation generally must be 



rded as a phagocytic reaction on the part of the 



iism against irritants. This reaction is carried out 



he mobile phagocytes, sometimes alone, sometimes 



with the aid of the vascular phagocytes or of the ner- 



M-.ern. The essential phenomena of infiamma- 

 n represent an actual struggle between the phago- 

 tes and the irritant agent." T., Paralytic {of 

 fiammation) ; the doctrine that regards hyperemia 

 the most essential act in inflammation, and caused 

 paralysis of the vasomotor nerves. T. of Pepto- 

 geny and Peptogenous Substances of Schiff and 

 Corvisart : this theory adduces the noteworthy pecu- 

 liarity whereby the secretory tissues of the stomach 

 yield gastric juice only when in contact with certain 

 alimentary substances, because these substances furnish 



i an indispensable element in the production of pepsin. 

 T.. Podwyssozki's [of Inflammation); "inflamma- 



j tion is a local reaction, often beneficial, of the living 



I -inst the irritant substance. This reaction is 



sfly produced by a phagocytic activity of the meso- 



dermic cells. This reaction, however, may precipi- 



. tate not only changes in the vascular system, but also 

 the chemic action of the blood-plasma and tissue- fluids 

 in liquefying and dissolving the irritant agent." T. 

 of Preformation. See Preformation and Incasement. 

 T.. Recapitulation; according to which each animal 

 in its own development repeats the history of its 

 ancestry, "climbs up its own genealogical tree." 

 This theory was first clearly enunciated by Fritz Miil- 

 Ier, and has since been elaborated by many, notably by 

 Balfour and Ernst Hseckel. T., Rokitansky's {of In- 



i flammation); the theory that inflammation is an abnor- 

 mal process of nutrition in which, as a result of stasis, 

 exudation takes place. The stasis is the most important 

 factor. Its cause is to be found in the commingling 

 and adhesion of the red cells, the condensation of the 

 plasma by transudation of serum, and the accumulation 

 of white cells. The exudation is explained, aside from 

 molecular attraction, by the continued pressure under 

 which the plasma in the area of stasis exists. T., 

 Roser's {of Inflammation) ; according to this theory 

 inflammation is a true disease, due to infection by 

 microbes, the reparatory phenomena constituting 

 its cure. T., Sachs' {of Inflammation) ; is that a 

 single process represents a salutary reaction against 

 some injurious influence ; that regeneration, cicatriza- 

 tion, and the primary processes of inflammation, such 

 as emigration and the alteration in the vessel- walls, are 

 reparatory acts serving to counteract the damage 

 brought about by the irritant, i. e. , true inflammation 

 never occurs except where there has been a primary 

 lesion of the tissues. This theory has been accepted 

 and developed by Buchner and Neumann. T., 

 Samuel's {of Inflammation) ; according to this theory 

 the main factor in all inflammatory states consists in a 

 lesion of the vessels, which are attacked by the irritat- 

 ing cause. The inflamed vessels, being more perme- 



able, allow the fluid and corpuscular elements of the 

 blood to flow through them in a purely passive manner. 

 These exuded products collect in a situation where they 

 meet with least resistance and there produce the inflam- 

 matory tumor. T., Schimper's {of the Arrangement 

 of Leaves) ; according to which all relations of position 

 are referred to a single principle. " This principle lies 

 in the idea that growth in a stem has an upward direc- 

 tion in a spiral line, and that the formation of leaves is 

 a local exaggeration of this spiral growth.'* | Sachs.) 

 T., Schwann's {of Inflammation). Same as Roki- 

 tansk/s Theory, q. v. T. of Schwendener. See 

 Sckwendenerism. T., Spasmodic | of Inflamnu: 

 the doctrine that hyperemia is the most essential phe- 

 nomenon in inflammation, and holds it to be caused by 

 a spasmodic contraction of the affected arteries, accom- 

 panied by an afflux of blood to the neighboring part. 

 T., Strieker's {of Inflammation) ; the theory that the 

 tissue-cells, under the influence of the inflammatory ir- 

 ritant, return to their former undifferentiated embryonic 

 condition, and then rapidly proliferate, forming similar 

 cells. T., Virchow's Nutritional [tf Parenchymat- 

 ous Inflammation) ; according to Virchow, hyperemia 

 is but a subordinate process and entirely secondary to 

 an increased nutritive and reproductive activity of the 

 cells at the seat of inflammation, which gives rise to the 

 formation of a large quantity of exudation-cells at the 

 expense of the cells of the damaged tissue. 



Therapeia {ther-ap-i f -ah). See Therapeutics. 



Therapeutic {ther-ap-u' -tik) \pipa-tvTiKrf\. Pertain- 

 ing to therapeutics ; curative. T. Test, a method of 

 diagnosis by administering certain remedies which are 

 known to influence a given disease, e. g., quinin in 

 malaria, potassic iodid and mercury in syphilis. 



Therapeutics \ther - ap - u' '- tiks) [Wcpa-erruoy]. That 

 branch of medical science which considers the applica- 

 tion of remedies as a means of cure. T., Mediate, 

 medicating a child through its mother's milk. T., Sug- 

 gestive, hypnotic suggestion in the treatment of dis- 

 ease. 



Therapeutist {ther-ap-u' -tisl) [Oeparctia, therapy]. One 

 skilled in therapeutics. 



Therapic [ther-ap / -ik) [dspa^eia, therapy]. Pertaining 

 to therapy ; therapeutic. 



Therapol {ther f -ap-ol) [deparreia, cure ; oleum, oil]. A 

 vegetable oil containing ozone. It has been used in 

 diphtheria. 



Therapy, Therapeia (ther / -ap-e, ther-ap-if-ah) \^tpa- 

 Tzein, therapy]. Therapeutics — now used chiefly as a 

 suffix, e. g., serotherapy, aerotherapeutics. 



Therg's Fistula. See Fistula. 



Theriac {the'-re-ak). See Theriaca. 



Theriaca [the-ri' -ah-ah)[(hjptaKq ; (hfpiov, beast, serpent ; 

 it was at first the name of a medicine used for snake- 

 bite]. Treacle ; molasses. The non-crystallizing 

 residue of the juice of the cane, left after the process 

 of evaporation. It consists of cane-sugar-solution, 

 caramel, and various impurities. It was formerly used 

 in pharmacy and also as the name of an antidote to 

 the bites of venomous snakes or insects. T. an- 

 dromachi, Venice treacle, a compound (no longer 

 official) of some seventy or more drugs mixed with 

 honey, and given as an antidote in cases of snake- 

 bite. ~ 



Theriacal {the - ri'-ak-al) [fhrptaKJ/ ; &i}piov, best]. 

 Having the virtues ascribed to theriaca ; useful as an 

 antidote for venomous bites. 



Theriodic {the-re-od' -ik) [(hipiov, a wild beast] . Malig- 

 nant. 



Therioma {the - re -c/- man) [Bijpidetv, to make or be 

 wild: //. , Theriomata~\. A rare name for a malig- 

 nant ulcer ; a tumor. 



