Contents:

Appreciation de l'Invasion dans les Cancers Humains.- The Significance of Pericarcinomatous Metastases in Local Growth.- Early Invasive Growth as Seen in Uterine Cancer and the Role of the Basal Membrane.- Locomotion of Cancer Cells in vivo Compared with Normal Cells.- Le Pouvoir Invasif des Cellules Transformees Etudie en Culture in vitro.- Applicability of in vitro Models to a Study of the Invasiveness of Cancer, Round Table Discussion.- Some Factors Relating to the Invasiveness and Destructiveness of Solid Malignant Tumours.- Biochemical Aspects of the Environmental Control of Tumour Growth and Spread.- Studies on Metastasis of Spontaneous and Transplantable Tumours at High Altitude.- The Tumour Cell and Vascular Bed Size Relationship in Experimental Metastases.- Morphogenesis of Lung Metastases in a Transplantable Reticulum-Cell Sarcoma of the Golden Hamster.- Studies of Circulating Cancer Cells in Cancer Patients.- Immunological Tolerance and Host-Tumour Relationship.- The Role of the Cell Surface in Tumour Invasion.- An in vitro Model of the Mechanism of Invasion.- Fluorescent Antibodies to Methylcholanthrene Sarcomas.- Le systeme reticulo-endothelial et l'invasion tumorale.- Role de la Facilitation Immunologique dans le Developpement des Tumeurs Cancereuses.- In vitro and in vivo Cytostatic Effect of Antiribosome FLS Antisera on Mouse Ascitic Tumour Cells FLS.- The Role of Tumour Polypassage at short Intervals in the Evolution of Experimental Neoplasia.- Short-range Factors Affecting Cell Growth and Movement.- Le Mechanisme de l'Invasion du Cancer en Culture Organotypique.- Induced Dissociation of Walker Tumour 256 into its "Carcinomatous" and "Sarcomatous" Patterns of Growth.