Abstract: A baseball pitching machine is disclosed preferably employing a counterrotating wheel type baseball launch subsystem pitching a series of baseballs and a computer controlled system for selecting the type and percentage of pitches, pitcher and batter characteristics, strike zone areas and other parameters to provide a meaningful batting training session. The pitching machine includes a ball transport subsystem including a carousel for receiving and transporting baseballs in sequence to a position adjacent the counter rotating wheels. While being transported, each baseball stops at seam orienting stations where seam rotators rotate the baseball to provide a commanded seam orientation for the particular pitch selected. The baseball is oriented by the ball orienter for insertion in the launch subsystem. A computer allows the selection by the operator of a variety of pitches, random or selected order.

Abstract: A baseball pitching machine is disclosed preferably employing a counterrotating wheel type baseball launch subsystem pitching a series of baseballs and a computer controlled system for selecting the type and percentage of pitches, pitcher and batter characteristics, strike zone areas and other parameters to provide a meaningful batting training session. The pitching machine includes a ball transport subsystem including a carousel for receiving and transporting baseballs in sequence to a position adjacent the counter rotating wheels. While being transported, each baseball stops at seam orienting stations where seam rotators rotate the baseball to provide a commanded seam orientation for the particular pitch selected. The baseball is oriented by the ball orienter for insertion in the launch subsystem. A computer allows the selection by the operator of a variety of pitches, random or selected order.

Abstract: Platinum(amine) complexes, when covalently linked to a water-soluble, biodegradable or biostable polymer, exhibit high antitumor activity at low dosages of platinum against L1210 and solid tumors. The complexes are platinum square planar complexes and octahedral structures of the formulae ##STR1## wherein A.sub.2 represents either 2 ammonia ligands, 2 monodentate amine ligands or a single bidentate amine ligand; P is either a biodegradable or a biostable but biocompatible polymer having pendent anionic groups which form covalent linkages with Pt; o is a positive integer and X is an anionic ligand.

Abstract: Platinum complexes of the formula ##STR1## wherein Z is --CO-- or a single bond and R is --COOH or --SO.sub.3 H, and the pharmaceutically acceptable salts thereof with bases, are stable readily water-soluble pharmaceutically active compounds having antitumor, anti-inflammatory and trypanocidal activities.

Abstract: Palladium complexes and pharmaceutical compositions containing palladium complexes adapted for the treatment of tumors cells sensitive to the palladium complexes and methods of treating tumor cells using the palladium complexes are disclosed.