The anatomical record . ive. The ova were collected in a neighboring pond Znrnik, B. VorRleirhondc Studion ul)er don Ban der Niere von Echindaund dor I{«i)tilirnniorc. .IcnaiscliP Zcitsclirift, vol. 46, 1910. * lliilor. (i. (art. The artcriolae rcrtac of the mammalian kidney. . vol. fi. 1>K)7. UEXAL TUBULES OF VERTEBRATES 307 and could not l)o spfoificallj idcntifiod. Tho roconstructionwas made at a magnification of two hundred diameters. Thefigure is added more with a view of making the series of figurescomplete than with a view of adding materially to current knowl-edge of t
The anatomical record . ive. The ova were collected in a neighboring pond Znrnik, B. VorRleirhondc Studion ul)er don Ban der Niere von Echindaund dor I{«i)tilirnniorc. .IcnaiscliP Zcitsclirift, vol. 46, 1910. * lliilor. (i. (art. The artcriolae rcrtac of the mammalian kidney. . vol. fi. 1>K)7. UEXAL TUBULES OF VERTEBRATES 307 and could not l)o spfoificallj idcntifiod. Tho roconstructionwas made at a magnification of two hundred diameters. Thefigure is added more with a view of making the series of figurescomplete than with a view of adding materially to current knowl-edge of the aniphii)ian pronephric tubule. The figure heregiven presents similarity to that given by Herbert H. Field,figure 41, plate 4, a reconstruction of the right pronephros of alarva of Rana having a length of S mm., from anterior end totip of tail. Fields account of the amphibian pronephros is thebest available. In the l)rief statement here given, his nomen-clature is used. The pronejihric tubule shown in figure n&i «»—-.»ii»^ :n& ct Fip. 1 Reconstruction of the pronephric tubule of a larva of Bufo, thelarva having a length of 10 mm. from anterior end to tip of tail. X 80. tis.,ncphrostoinc; rl., common trunk. sents only two ncphrostomes, The two nephrostomal tu-bules join in a Y-shaped junction, hidden beneath the modelas placed in the figure, in the neighborhood of the region indi-cated by a cross. The common trunk presents three mainloops extending primarily in cephahc caudal direction, eachpresenting three to four secondary loops. The figure presents asketch over an enlarged photographic print, the photographhaving been taken from a direction which admits tracing thecommon trunk most completely. The arrow indicates thedirection taken by the tubule in the one location where confusionmay arise. The actual length of the common trunk reconstructedas measured on the model, is approximately ; nun. KieUI, Herbert II. The development of the pronephros and se
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
