Crystals
Crystals Of Unorganised Matter Are Spoken Of As Symmetrical. The Symmetry, However, Which They Exhibit Is Not .a Bilateral Sym Metry. It Consists Of The Repetition Of The Same Angles And Facets At The Poles Of An Axis, But The Repetitions Are Not Reverses. The Reader May Illustrate My Meaning ...
Cyst
Cyst. Kystus, (swerve, Bladder). Certain Membmnous Investments, Of Various Forms, Though Commonly Spheroidal, Being Shut Sacs, And Developed In The Midst Of Other Tissues, Have Obtained The Name Of Cysts. Up To The Present Moment The Study Of Cysts Is So Little Advanced That We Can Scarcely Dis Cover Any ...
Deposit Of Earthy Phosphates
Deposit Of Earthy Phosphates The Earthy Phosphates, Consisting Of Mag Nesia In Combination With Ammonia And Phos Phoric Acid, Are Seen As Deposits In The Urine In Two Forms, Viz. As A Monobasic And A Bi Basic Salt. The Monobasic Phosphate, Which Is Seen In Neutral Or Only Slightly Alkaline ...
Descriptive Anatomy
Descriptive Anatomy. Apparent Origin.—the Optic Nerves Com Mence By Two Broad Medullary Tracts (the Tractus Optici), Each Of Which Becomes First Apparent At The Under Surface Of The Corres Ponding, Optic Thalamus. Tractus Optieus.—this Appears To Derive Its Principal Origin From The Corpus Geniculatum Externum : From That Tubercle A ...
Developement
Developement. - The Innominate Bone Is Developed By Three Primitive And Five Com Plementary Points Of Ossification. The Three Primitive Points Commence In The Three Component Parts Of The Bone, The Ilium, Ischium, And Pubis Respectively, From A Single Piece Of Cartilage Of' The General Form Of The Bone. That ...
Development
Development. - The Development Of The Male Urethra Is A Subject Of Considerable Interest Both In A Physiological And Patho Logical Point Of View, As A Comprehension Of The Phenomena Attending It Enables Us To Offer A Ready Explanation Of Those Curious Mal Formations To Which This Canal Is Not ...
Development
Development. — The Cow's Embryo Of Si Lines In Length, The Gangliated Cord Of The Sympathetic In The Thorax Was Observed, By Kiesselbach §, On Either Side Of The Spinal Column In The Form Of A Thick Cord, Presenting Numerous Inequalities. In The Pig's Embryo, Eight Lines In Length, It ...
Development And Involution Of
Development And Involution Of The Ovary, The Origin Of The Ovary, And The Alterations Which It Undergoes At Different Periods Of Life. The Ovary Takes Its Origin In A Separate Portion Of Blastema, Quite Independently Of The Wolffian Body, With Which It Is In Close Contact. It Is Not Indeed ...
Development Of Veins
Development Of Veins. - Are The Veins, Large And Small, Originally Developed As Capillaries, The Succeeding Changes By Which Their Texture And Size Are Modified Taking Place Subsequently To Their Being Permeable Sanguiferous Channels ? Whether This Is En Tirely The Case Is Doubtful : That It Is So To ...
Development Of The Fallopian
Development Of The Fallopian' Tube. Whatever Difference Of Opinion May Exist Regarding The Origin Of The Excretory Duct Of The Male Generative Gland, There Appears To Be No Doubt, That In Birds At Least The Correspond Ing Part In The Female Has Its Commencement In A Structure Which, As Soon ...
Diabetes Mellitus
Diabetes Mellitus. The Urine In This Disease Contains A Sugar Which May Be Regarded As Identical With Sugar Of Grapes. It Is Generally Of Very High Specific Gravity, Varying From The Highest Specific Gravity Observed In Health To 1055 Or Even 1060. • Schonlein Has An Opinion That In The ...
Diaphragm
Diaphragm (in Anatomy), (1c4ecenta, A, Inter, And Rp Ecca Sepia, Claudo ; Lat. Din Ph•ognu, ; Ital. Digframma ; Fr. Diaphragms; Ger. Zwerehiell ; Eng. The Name Given To That Musculo-tcndinous Septum By Which The Cavities Of The Thorax And Abdomen Are Separated From Each Other In The Mammalia. Nothing ...
Diaphragm
Diaphragm (human Anatomy).—the Dia Phragm In Man Is A Muscle Of Great Importance (post Cor Facile Prineeps, Haller), Being The Chief Agent By Which Respiration Is Carried On, While It Assists In The Performance Of Many Other Im Portant Processes. It Is Placed Between The Thorax And Abdomen, Forming A ...
Diciiitonida
Diciiitonida. — Family Ascidiad/e, E. Forbes. Synonyms: Tel Simples, Savigny ; Ascididcr, Macleay ; Tullith78 Libres Ou As Cidiens, Lamarck ; Aseidiaria, Stark; " Les Iso Cuvier ; Ascidiacea, Pars, Blainville ; Ascidiens Simples, 11rilne- Edwards ; Ascidiens, Van Beneden. Body Simple, Fixed ; Animals Isolated Or Gregarious ; Not ...
Differences Op Constitution In
Differences Op Constitution In Relation With Tue Production Op Iieat Amono Animals. Since The Body And The Functions Are Pro Gressively Developed, And Without Interruption Between The Two Grand Periods Named, There Is In The Coarse Of This Long Interval As Much Dif Ference In The State Of The Constitution ...
Digestion
Digestion. (fr. Digestion; Germ. Ver Danung ; 1 Tal. Digestione.) This Term Is Em Ployed In Physiology To Designate That Func Tion By Which Alimentary Matter Is Received Into An Appropriate Organ, Or Set Of Organs, And Where It Is Subjected To A Specific Action, Which Adapts It For The ...
Digestive Canal
Digestive Canal (comp. Anat.)--• The Digestive Canal Is That Cavity Of The Body Which Is Destined To Receive The Food Of Animals And To Retain It Until Its Nutritious Part Has Been Separated Or Absorbed. It Is Termed Also The Alimentary Or The Intestinal Canal. As It Is The Part ...
Digestive System
Digestive System. Illouth.—the Various Modes Of Locomotion, Resulting From The Different Modifications Of The Osseous And Muscular Systems Observable In The Several Families Of Marsupialia, Relate To The Acquisition Of As Various Kinds Of Alimentary Substances, Which Necessarily Require For Their Assimilation As Many Adaptations Of The Diges Tive Organs. ...