Drawing, 'Hog' by [Martin Barry] Plate 6, figure 45 (labelled here as figure 48) showing the tunica granulosa of the hog [Sus scrofa; wild boar] removed from the ovisac. Figure pasted onto backing sheet. Inscribed with figure details. Red ink inscription next to figure reading '150' struck out in black ink. A rough graphite sketch of another ovum is present to the left of the figure. Not signed. The manuscript for this paper is wanting. Subject: Biology / Zoology Published in Philosophical Transactions as part of paper titled 'Researches in embryology. First series' by Martin Barry Received by the Royal Society on 20 June 1838. Read 21 June 1838. [1838]