This book is the transcript of a lecture by Clemente Onelli given in aid of the Club Náutico San Isidro on January 10, 1915 and published in the Zoological Garden Magazine in December 1915.
| Language | Spanish |
| Pages | 52 |
| Size | 11 × 15 cm |
| Cover | Paperback, full color |
| Interior | Black & White |
| Editorial | Maizal Ediciones |
| ISBN | 9789874796097 |
