These facts are of importance, as a differential count of the white cells, together with a careful inspection of a blood-film for basophile staining and alteration in the red cells, as well as other phenomena noted, together with an estimation of the hæmoglobin contained in the blood, are to our mind of considerably more value in the diagnosis of lead poisoning than is the quantitative estimation of the red or white cells. The following tables give a certain number of enumerations, etc., made from the blood of lead-poisoned persons: BLOOD-EXAMINATION OF LEAD ANÆMIA--DIFFERENTIAL COUNT PER CENT. +---+-----+---------+------+------+--+--+--+--+--+--+--+--+--+--+--+ |No.| Hb. | R.B.C. |W.B.C.|Index.|A.|B.|C.|D.|E.|F.|G.|H.|I.|J.|K.| +---+-----+---------+------+------+--+--+--+--+--+--+--+--+--+--+--+ | | Per | | | | | | | | | | | | | | | | |Cent.| | | | | | | | | | | | | | | | 1| 60 |3,460,000| 7,000| 0·7 |63|20| 6| 3| 8| 0| +| -| +| -| +| | 2| 45 |1,707,000| 9,000| 1·4 |46|38| 8| 1| 7| 0| +| +| +| +| +| | 3| 55 |2,620,000|20,000| 1·0 |58|32| 4| 2| 4| 0| +| -| +| -| +| | 4| 60 |1,334,000|10,000| 3·0 |55|35| 8| 0| 5| 0| +| -| +| +| +| | 5| 54 |3,210,000| 8,000| 0·9 |52|41| 4| 2| 1| 0| +| +| +| -| +| | 6| 60 |1,347,000|10,000| 3·0 |59|32| 3| 2| 3| 1| +| +| +| +| +| | 7| 65 |3,760,000| 9,000| 0·9 | | | | | | | | | | | | | 8| 65 |2,200,000|10,000| 0·7 | | | | | | | | | +| | +| | 9| 50 |3,860,000| 8,000| 0·6 | | | | | | -| | | +| | +| | 10| 60 |3,420,000| 9,000| 1·0 |76|16|13| 3| 0| 0| | | +| | +| +---+-----+---------+------+------+--+--+--+--+--+--+--+--+--+--+--+ +---+-----------------------+------------------------------------+ |No.| Work. | Notes. | +---+-----------------------+------------------------------------+ | | | | | | | | | 1|Paint mill | 5 years. | | 2|Paint mill |10 years. | | 3|Paint mill | 7 years. | | 4|Packer white lead | 5 years. | | 5|Grinder | 6 years. | | 6|White lead | 8 years. | | 7|Press and stoves | 8 years. | | 8|Zinc distillation still|20 years; double wrist-drop 2 years.| | 9|White lead beds |10 years. | | 10|Packer | | +---+-----------------------+------------------------------------+