Provided, That the provisions of this act shall not apply to persons engaged in the wholesale drug trade, regularly selling cocaine, its salts, derivatives, or compounds, or alpha or beta eucaine, their salts, derivatives, or compounds, to persons engaged in the retail drug trade, under the following conditions: That the wholesale dealer shall affix or cause to be affixed to the bottle, box, vessel, or package containing the article sold, and upon the outside wrapper of the package as originally put up, a label distinctly displaying the name and quantity of cocaine or its salts, alpha or beta eucaine, or their salts, sold, and the word “poison,” with the name and place of business of the seller--all printed in red ink: And provided also, That the wholesale dealer shall, before delivering any of the articles, make or cause to be made, in a book kept for the purpose, an entry of the sale thereof, stating the date of sale, the quantity, name, and form in which sold, the name and address of the purchaser, and the name of the person by whom the entry is made,--and the said book shall be always open for inspection by the proper authorities, and shall be preserved for at least five years after the date of the last entry made therein: And provided also, That any manufacturer may sell to another manufacturer of the same article or to a wholesale dealer in drugs, or a wholesale dealer in drugs may sell to a manufacturer of the same article or to another wholesale dealer in drugs, alkaloid cocaine, or its salts, derivatives, or compounds, or alpha or beta eucaine, or their salts, derivatives, or compounds, or any substance or preparation containing cocaine, its salts, derivatives or compounds, alpha or beta eucaine, their salts, derivatives, or compounds, in their original package. Such package shall be labeled as herein provided, and shall be securely sealed. Each manufacturer and each wholesale dealer in drugs shall, before the delivery or at the time of the receipt, as the case may be, of any such drug, enter or cause to be entered in a book to be kept by them respectively for that purpose, a record of the purchase and sale of such drug, stating the date of purchase and the name and address of the person to whom sold, the quantity, name, and form in which sold, and a description of the package or container in which sold, and how sealed, and there shall also be entered in such book, at the place of such record, a statement that such drug was sold or purchased, as the case may be, in the original package, that the seals thereon were undamaged and unbroken, and the labels were attached thereto as herein provided and were not in any manner defaced or damaged, which statement shall be signed by the person selling such drug, in the book herein required to be kept by him. Each manufacturer and each wholesale dealer shall also file, as a part of this record, all orders for cocaine, its salts, derivatives, or compounds, or alpha or beta eucaine, their salts, derivatives, or compounds; or any substance or preparation containing its salts, derivatives, or compounds; alpha or beta eucaine, their salts, derivatives, or compounds, from other dealers.