To view the journals you will need a PDF document reader, for example Adobe Reader, installed. This can be downloaded for free from www.adobe.com or by clicking the download button here.
The journal sizes vary between 5MB and 20MB according to page length and size of colour images. The majority of the files are in the range 3 -8 MB. Download speeds will vary, but an average broadband connection will typically acquire a 10MB file in about 3 minutes.