MIGRATORY 



767 



MILK 



the ovum from an ovary to the tube of the opposite 

 side. M., Internal {of the Ovum), the passage of the 

 ovum through the tube related to the ovary from which 

 the ovule was discharged, into the uterus and across 

 into the opposite tube. M. of Ovum, its passage 

 from the ovary to the Fallopian tube. M. of 

 White Corpuscles, one of the phenomena of inflam- 

 mation, consisting in the passage of the white cor- 

 puscles of the blood through the vessel- wall. 

 Migratory (mi'-grat- o- re) [migrare, to wander]. 

 Characterized by wandering, or changing locality. 

 M. Pneumonia. See Pneumonia migrans. 

 Mika Operation ymi'-kah) [African]. A method in 

 vogue among certain African tribes for the purpose of 

 preventing impregnation. It consists in the formation 

 of a permanent urethro-perineal fistula in the male. 

 Mikrantrus(/«/ -kran'-trus). See Micrantrus. 

 Mikrencephalus (mi-kren-sef -al-us). See Alicren- 



cepha'us. 

 Mikrencranus (mi-kren-kra'-nus). See Micrencranus. 

 Mikro- (mi'-kro-). See Micro-. 

 Mikron (mi'-kron). Same as Micron. 

 Mikulicz Drain. A method of draining the abdominal 

 cavity after operation. A piece of iodoform -gauze, 

 with a string tied to its center, is placed in the cavity, 

 and into this improvised sac considerably more gauze 

 is packed. Pressure is thus induced while the capil- 

 lary action of the sac secures drainage. 

 Mil [mille, a thousand] . The one-thousandth part of 

 an inch. M., Circular, the area of a circle the 

 one-thousandth of an inch in diameter. 

 Mildew (tnil'-du) [ME., mildewe, mildew]. The 

 common name for any one of a number of minute 

 fungi destructive to living plants and dead vegetable 

 substances, as cloth and paper. The name is most 

 properly applied to: (i) The Erysiphee, or powdery 

 mildews, which are parasitic upon living plants of 

 many natural orders. Among the best known and 

 most destructive is the vine mildew, or powdery 

 mildew of the grape, Otdium tucker i, Berk, a native 

 of America, where alone it produces its perithecial 

 fonn, described as Erysiphce spiralis, or Uncimda am- 

 f>sidis, the conidial form only being known in 

 ""■.urope. The mildew infesting Composite, Plantago, 

 rbascum, Labiatae, is Erysiphte lamprocarpa : that 

 grasses, E. graminis ; that of Umbelliferae, clover, 

 ern, lupines, etc., E. martii ; that of Polygonum, 

 ex, Convolvulus, Dipsacus, Lathyrus, Delphi- 

 , Aquilegia, Ranunculus, E. communis; that of 

 various species of Prunus, Podosphara kunzei ; 

 that of hops and other plants, P. castagnei ; 

 The Peronosporea, or downy mildews, among 

 ich are a large number of well-known parasites, 

 h as the American downy mildew of the grape, 

 onospora viticola : that of the Umbellifera, P. 

 ea ; that of Cruciferne, cabbages, etc., P.para- 

 that of onions, P. schleideniana ; that of vio- 

 lets, P. viola: that of "potato rot," Phytophthora 

 ■tans, which, according to Bennett and Murray, 

 first appears, as a rule, on the green leaves of the 

 potato-plant in July or August, the sporangiophores 

 emerging through the stomates. Sporanges are 

 formed, under favorable conditions, in a few hours, 



«d are carried by the wind to other potato-leaves, 

 lere they produce zoospoores or germ-tubes, in 

 ops of water formed by dew or rain ; the germ- 

 tubes penetrate the epiderm, setting up fresh growths 

 of mycelium in new plants, and thus the disease is 

 propagated ; countless numbers of such propagating 

 cells, each potentially the mother of a number of 

 zoospores, may thus be set free from a few diseased 

 plants, and the spread of infection and destruction of 



tissue in warm, moist weather is almost inconceivably 

 rapid. The disease extends to all parts of the plant, 

 including the tubers, in which the mycelium often 

 remains in a resting condition throughout the winter, 

 a fresh start being made in the spring. -For treat- 

 ment, spraying with Bordeaux mixture, alone or in 

 combination with solutions of ammoniacal carbonate 

 of copper, sulphate of copper, sulphate of iron, etc., 

 have been employed. 



Milfoil (niil'-foil). See Achillea. 



Miliaria {mil- e -a'- re -ah) [milium, millet]. Prickly 

 heat ; an acute inflammatory disease of the sweat- 

 glands, the lesions consisting of pin-point or larger- 

 sized vesicles and papules, accompanied by a pricking 

 or tingling sensation. It runs an acute or subacute 

 course, and is followed by slight desquamation. Relap- 

 ses are common. M. alba. See A/, crystallina. M. 

 crystallina, a variety of miliaria in which the sweat 

 accumulates under the superficial horny layers of the 

 epidermis to form small, clear, transparent vesicles. 

 It is also called Sudamina crystallina. These lesions 

 are principally found on the neck, chest, back, and 

 abdomen ; they form rapidly, but do not increase in 

 size, nor do they coalesce. They are followed by 

 slight desquamation. Sometimes their contents be- 

 come cloudy, milky, or semi-puriform in character 

 {Miliaria alba). M. lactea, a form occurring in 

 puerperal women. M. papulosa, a variety of A/, 

 rubra. It is the well-known "prickly heat.'' M. 

 puerperalis, M. puerperarum, a form occurring in 

 lying-in women, especially in conditions of septic in- 

 fection. M., Red Gum. See M. strophulus. M. 

 rubra, a form of miliaria in which there is an inflam- 

 mation of the tissues surrounding the sweat-glands, 

 secondary to the retention of sweat. There is red- 

 ness and itching ; the eruption is very copious and 

 thickly set, so that the skin assumes a vividly red color. 

 M. strophulus, a form occurring in nursing infants, 

 due to excessive swathing. M. vesiculosa. Same 

 as M. rubra. 



Miliariform [mil-ear' 'if-orm). Synonym of Miliary. 



Miliary (mil' '-e-a-re) [milium, millet]. Of the size of 

 a millet-seed. M. Fever. See Fever. M. Tuber- 

 cles, tubercular nodules of very small size, usually 

 present in large numbers, as in miliary tuberculosis. 

 See, also, Grutum. M. Tuberculosis. See Tuber- 

 culosis. 



Military Fever. See Typhus Fever. M. Medicine, 

 or Surgery, the treatment of the diseases and wounds 

 to which soldiers and sailors are liable. 



Milium [niW -e-um) [milium, millet-seed]. Grutum ; 

 Strophulus albidus. A skin-disease characterized by 

 the formation of small, roundish, whitish, sebace- 

 ous, non-inflammatory elevations, situated just beneath 

 the epidermis. They are found mainly on the face, 

 eyelids, and foreheads of elderly persons, and may 

 exist in immense numbers. They may undergo cal- 

 cification, giving rise to cutaneous calculi. M., 

 Amyloid. Synonym of Molluscum contagiosum, q. v. 

 M., Colloid, a rare skin-disease characterized by the 

 presence, especially on the bridge of the nose, forehead, 

 and cheeks, of minute, shining, flat, or slightly raised 

 lesions of a pale-lemon or bright-lemon color. It is a 

 form of colloid degeneration of the skin, affecting 

 persons of middle or advanced age. 



Milk [ME., milk, milk]. The secretion of the mam- 

 mary glands of Mammalia, consisting of water, casein, 

 albumin, fat, "milk-sugar, and salts. Cream con- 

 sists mainly of the fats that rise to the surface of the 

 milk. Skim-milk is the residue left after the removal 

 of the cream. Buttermilk is cream from which the 

 fatty matter has been removed. The sp. gr. of good 



