The tongue was studied in 15 foetuses of goat. The torus linguae and transv
erse lingual fossa were well defined in group 3. The percentage length of t
ongue to CR length reduced from 22% in group 1 to 19% in groups 2 and 3. Th
e ratio of length and width, and length and thickness narrowed in group 2 a
nd 3. The circumvallate papillae were 3 to 15 in group 2 and 11 to 15 in gr
oup 3. The lamina epithelialis was thicker on dorsum than on ventral aspect
of tongue. It comprised of 2 to 3 layers of undifferentiated flattened cel
ls in group 1. In groups 2 and 3 the nonkeratinized stratified squmous epit
helium lined the mucous membrane of the tongue. The thickness of intrinsic
lingual muscle mass increased from group 1 to 3.