. A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science . s; li, Immeral tians\rrsH vein; ,^. sniifinunitTary Iransvefsc v<-in :77!, middle transMMse vein; yt, posterior transverse \ein; -1, costal rolls: 7i, snli-eostal cells : (. mariJinal cell: /), anterior fork cell or first suiiiiarLnual cell; E,second submarLnnal coll; F. first posterior cell: G. hinder folk or sei-ond pos-teriorcell; 7/, third |io,sterior cell: J, first basal cell; J, second cell; K,anal cell; L, cell: 3/, spurius cell. mandibl
. A Reference handbook of the medical sciences embracing the entire range of scientific and practical medicine and allied science . s; li, Immeral tians\rrsH vein; ,^. sniifinunitTary Iransvefsc v<-in :77!, middle transMMse vein; yt, posterior transverse \ein; -1, costal rolls: 7i, snli-eostal cells : (. mariJinal cell: /), anterior fork cell or first suiiiiarLnual cell; E,second submarLnnal coll; F. first posterior cell: G. hinder folk or sei-ond pos-teriorcell; 7/, third |io,sterior cell: J, first basal cell; J, second cell; K,anal cell; L, cell: 3/, spurius cell. mandibles and maxilla? appear to cut a passage throughthe skin by the thrust of the head and the labrum isforced into the opening thus made, while the flexibleliibium holds together and directs the other parts, its stembeing loojied down out of the way as the latter proceedsdeeiicr and deeper into the skin. REFERENCE HANDBOOK OF THE 31EDICAL SCIENCES. TIr course taken by the spores of the malarial [larasitein reaching the new host can be reasonably set downabout as outlined above; with the embryonic tilarix,. Fig. 3369.—Ci(!e,rj)i(H9f lis. Female above, male below. Enlarged.(After Howard, Bull. United States Dep. Ag.) however, the case is different and much less satisfac-torily explained. These worms are known to bore theirway out from the stomach of the mostiuito into the mus-cles and thence through the connective tissue and lymphspaces through which they penetrate, even into the labiumwhich possesses a considerable amount of suitable , in the opinion of Grassi, thej produce swelling, andwhen the organ is sharply bent in biting the delicate cov-ering is ruptured and the \\orms are set free, to fintl theirway along the mouth parts and into tlie tissvies of thenew host. Bancroft maintains that the embry<is <if Filariaimmitis always escape at the extreme ti]) of the laliiumas if a natural orifice existed there. On the other band,the investigat
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