The development of the human body; a manual of human embryology . -?:-j -^LiliiMs. Fig. 255.—vSections through the Lens (A\ no h,™,., c WV TO THIRTv-0NE DAVS fN^ 0^PIGFFHMUBX 481 48: THE DEVELOPMENT OF THE HUMAN BODY. As early as the second month of development the lensvesicle becomes completely inverted by mesodermal tissuein which blood-vessels are developed in considerable num-bers, whence the investment is termed the tunica vascu-

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902